REVIEW 4 major objections 5 minor 115 references
The fourth law of thermodynamics: steepest entropy ascent
T0 review · 4 major / 5 minor · reviewed 2026-08-14 · deepseek-v4-flash
Pith's one-line read This paper proposes a fourth law of thermodynamics: every nonequilibrium system's irreversible evolution is steepest entropy ascent under a state-dependent metric.
desk verdict Beretta's 'fourth law' is a competent synthesis of an existing family of gradient-flow models, but with the metric and timescale left free it states a representation theorem rather than a falsifiable law. read the letter →
The pith
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
The reading
What carries the argument
The load-bearing object is a Riemannian metric field $G_{\gamma}$ on state space together with a state-dependent time scale $\tau_{\gamma}$, the intrinsic dissipation time. The dissipative tangent vector is $\Pi = \tau_{\gamma}^{-1} G_{\gamma}^{-1}$ applied to the component of the entropy gradient orthogonal to the conserved charges; the metric converts the entropy differential into a preferred direction, and $\tau_{\gamma}$ sets how fast the state moves along it. From this one expression the paper builds the generalized conductivity matrix $L_{jk}(\gamma)$ as a Gram matrix, so its symmetry and non-negative definiteness follow automatically from the properties of the metric.
What would settle it
If a well-characterized system with a well-defined entropy is found whose far-from-equilibrium force-flux relations give an asymmetric generalized conductivity matrix that cannot be symmetrized by any choice of state-dependent metric, or whose measured relaxation path is incompatible with every metric steepest-ascent flow, the universal fourth law would be refuted.
Extended reading notes
Core claim
The central claim is Rule 4: for every nonequilibrium state for which entropy is well defined, the dissipative component of the time evolution is in the direction of steepest entropy ascent compatible with the conservation constraints, as measured by a local metric field. The paper's constructive result is that, within the rate-controlled constrained-equilibrium (quasi-equilibrium) approximation, the SEA evolution yields a nonlinear generalization of Onsager reciprocity: the dissipative rate of each constraint is a combination of the constraint affinities through a symmetric, positive-semidefinite matrix of generalized conductivities computed as a Gram matrix of the projected constraint derivatives. Thus reciprocity and fluctuation-dissipation structure survive far from equilibrium in a quasi-linear force-flux form.
Load-bearing premise
The law applies only to states for which entropy is well defined, and the paper's load-bearing premise is that operational entropy can be defined for every nonequilibrium state, including local subsystems; the extension to correlated states is still an open debate.
Editorial extensions
If this is right
- Near-equilibrium Onsager reciprocity becomes the linearized special case of a far-from-equilibrium quasi-linear structure.
- The same Gram-matrix construction yields a far-nonequilibrium generalization of the fluctuation-dissipation theorem.
- Systems with identical state spaces and conserved charges differ in dynamics only through their metric field and intrinsic dissipation time.
- Under the SEA evolution equation, maximum-entropy states are the only stable equilibrium states, so part of the second law emerges as a theorem.
- Coarse-graining relations between levels of description must include a rule connecting the SEA metrics at the two levels.
Reading between the lines
- If the fourth law is right, inverse modeling of nonequilibrium systems becomes a metric-recovery problem: relaxation data determine $G_{\gamma}$ and $\tau_{\gamma}$, which may make model reduction more systematic.
- A directly testable prediction is that far-from-equilibrium force-flux data should exhibit a symmetric generalized conductivity matrix even when the force-flux curves are nonlinear.
- The law's scope hinges on the contested allocation of entropy among correlated subsystems, so its sharpest future test may be in strongly correlated quantum systems rather than dilute gases or classical liquids.
- The variational form suggests a numerical consistency check: any proposed dissipative update can be tested for whether some positive-definite metric makes it a steepest-ascent step.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The manuscript proposes a 'fourth law of thermodynamics': every nonequilibrium state for which entropy is well-defined is equipped with a metric in state space such that the irreversible component of its time evolution is in the direction of steepest entropy ascent (SEA) compatible with conservation constraints. The paper argues that the SEA structure has emerged independently in many frameworks (GENERIC, metriplectic, gradient flows, chemical kinetics, quantum thermodynamics) and derives, under the rate-controlled constrained-equilibrium (RCCE) approximation, nonlinear force-flux relations and generalized Onsager reciprocity. It closes by addressing a referee's objection concerning stochastic thermodynamics and by restating the law as Rule (4) in the Conclusion.
Significance. If true, this would be a major claim: a universal variational principle for dissipative dynamics, unifying diverse formalisms and extending Onsager reciprocity far from equilibrium. The paper is explicit about its core equations and engages a broad literature, and it is honest about contested points, including the status of entropy for correlated states and the referee's objection. However, as formulated, the law appears to have no falsifiable empirical content: the metric G_γ and the intrinsic dissipation time τ_γ are free, state-dependent fields, so the SEA form can represent any charge-conserving, entropy-producing dissipative dynamics. The RCCE derivation then yields quasi-linear force-flux relations that are identities built from the definitions. These issues, rather than the admitted domain limitations, are decisive for the assessment.
major comments (4)
- [Section 4, Eq. (13)] Eq. (13) defines Π_γ = (1/τ_γ) G_γ^{-1} (δS/δγ)|_C with G_γ and τ_γ free, state-dependent fields. At each fixed state, for any charge-conserving dissipative vector v with positive entropy production, there exists a symmetric positive definite G_γ satisfying G_γ v = (δS/δγ)|_C (choose coordinates with (δS/δγ)|_C = e^1 and set the first column of G_γ to e^1 with a positive-definite completion); τ_γ then rescales v. Thus Eq. (13) imposes no restriction beyond conservation and dS/dt ≥ 0, and the 'fourth law' as stated is not falsifiable. Section 1 and Section 4 explicitly embrace the freedom of G_γ ('varies from system to system'), confirming that the law is a representation theorem, not a substantive dynamical constraint.
- [Section 5, Eqs. (19)–(22)] The generalized Onsager conductivities L_jk are defined in Eq. (19) as (1/τ_γ)(δa_j|_C | G_γ^{-1} | δa_k|_C), so the symmetry and non-negative definiteness that the text derives from the metric are present by construction. The force-flux relations Π_{Ak} = Σ_j χ_j L_jk in Eq. (22) and the quadratic entropy production in Eq. (21) are therefore identities following from the definition of L_jk and Eq. (16), not independent predictions. To claim an extension of Onsager reciprocity, the paper would need to show that the L_jk so defined coincide with the transport matrix measured or computed from the underlying kinetics; no independent identification is provided.
- [Section 4 / Footnote 4] The law is restricted to states 'for which entropy is well-defined,' and Footnote 4 concedes that the extension to correlated states of interacting systems is 'still the subject of intense debate' because correlation entropy cannot be uniquely allocated to subsystems. Since the Conclusion's Rule (4) explicitly covers local subsystems, the paper's universality claim is narrower than stated. This is an acknowledged limitation, but it further reduces the domain in which the proposed law could be tested.
- [Sections 3–4] The claimed convergence of many nonequilibrium frameworks is asserted rather than demonstrated: the equivalence of SEA with GENERIC and metriplectic structures is delegated to Refs. [65,87], and the referee's stochastic-thermodynamics objection is answered in the Conclusion by consistency arguments rather than by showing that the SEA form actually holds in a concrete stochastic model with negative entropy-production fluctuations. For a claim at the level of a law of Nature, this leaves the inductive evidence largely uncritical.
minor comments (5)
- [Front matter and captions] The paper mixes Italian and English front matter ('Sommario', 'Figura', 'Riferimenti bibliografici'); these should be translated for an English-language journal.
- [Figures 2 and 3] The captions refer to panels (a) and (b) that are not clearly labeled in the reproduced figures; the figure files should match the captions.
- [Section 2] The notation for state vectors (γγγ) is typeset as repeated characters and is sometimes ambiguous; a consistent bold math notation would improve readability.
- [Section 5] The phrase 'As shown in [107,65]' precedes a result that is in fact derived in the text; the sentence should distinguish the present derivation from previous work.
- [Section 5, after Eq. (21)] The sentence 'The natural properties ... grant automatically' would be more precise as 'imply'; the intended linear-algebra statement is standard but should be stated cleanly.
Circularity Check
The 'fourth law' is definitional: free metric and time fields make the SEA form impose no constraint, and the Section 5 Onsager reciprocity is a Gram-matrix identity.
-
self definitional
[Section 4, Eq. (13); Section 1, final paragraph (metric field definition); Section 4 text on G_γ and τ_γ]
"For every state γ of a system ... the component ... responsible for entropy generation (dissipation) is determined by a local non-degenerate metric operator G_γγγ and a local characteristic time τ_γγγ. ... The functional dependence of the SEA metric on the state variables varies from system to system and is in fact what characterizes its nonequilibrium behavior."
At a fixed state, Eq. (13) sets Π = (1/τ) G^{-1} (δS/δγ)|_C. Since G and τ are free state-dependent fields, the map (G, τ) → (1/τ) G^{-1} ω, with ω = (δS/δγ)|_C, is surjective onto the open half-space {v : ω(v) > 0}: choosing coordinates with ω = e_1, any such v is obtained from a symmetric positive-definite G^{-1} whose first column is proportional to v. Hence the 'fourth law' imposes no restriction beyond charge conservation and positive entropy production, which are already assumed, and the dissipative component is defined to be steepest entropy ascent rather than predicted to be.
-
self definitional
[Section 5, Eqs. (19)-(22) and following paragraph]
"By defining the 'RCCE nonequilibrium Onsager generalized conductivities' L_jk(γ) = (1/τ)(δa_j/δγ|_C | G^{-1}_γ | δa_k/δγ|_C) ... The natural properties of symmetry and positive definiteness of the non-degenerate metric G_γγγ grant automatically (no additional assumptions needed) its invertibility (G^{-1}_γγγ) and the symmetry and non-negative definiteness of matrix L_jk."
Eq. (19) defines L_jk as a Gram matrix of G^{-1}. Symmetry and non-negative definiteness are properties of every Gram matrix, so the 'far-nonequilibrium Onsager reciprocity' in Eqs. (21)-(22) is not an independent consequence of the fourth law but an immediate consequence of the definition. Because G is arbitrary, any quasi-linear force-flux relation with symmetric positive-semidefinite coefficients can be represented in this form; the claimed extension of Onsager reciprocity and fluctuation-dissipation relations has no falsifiable content beyond the definitional choice of the metric.
full rationale
The central claim fails as an empirical law because Eq. (13) defines the irreversible component through the free fields G_γ and τ_γ. The paper itself says the metric's functional dependence 'varies from system to system and is in fact what characterizes its nonequilibrium behavior,' and Figure 4 illustrates that different materials with identical entropy landscapes differ only by the metric. At each state, once the entropy gradient ω=(δS/δγ)|_C is fixed, the map (G,τ) → (1/τ)G^{-1}ω is surjective onto {v : ω(v)>0}; hence every charge-conserving, entropy-producing vector field is steepest entropy ascent for some metric. The only constraints are the already-assumed conservation and positive entropy production, so the fourth law adds no falsifiable restriction. Section 5's far-from-equilibrium Onsager reciprocity is likewise definitional: Eq. (19) defines L_jk as a Gram matrix of G^{-1}, whose symmetry and non-negative definiteness are automatic, so the quasi-linear force-flux structure is a renaming of the metric structure rather than a derived prediction. Self-citations to [65,87,107] establish equivalences and formulas, but the core reduction is already visible in the paper's own definitions; no external falsification is involved.
Assumptions & free parameters
free parameters (3)
- Metric operator field G_gamma =
not specified (system-specific)
- Intrinsic dissipation time tau_gamma =
not specified (system-specific)
- Choice of RCCE constraints (slow variables) =
chosen by modeler
assumptions (5)
- domain assumption Entropy is well-defined for every nonequilibrium state, including local subsystems.
- ad hoc to paper State space is a Riemannian manifold with a non-degenerate metric G_gamma.
- domain assumption Dynamics separates into reversible and dissipative components, with dissipative components orthogonal to conserved charges.
- domain assumption RCCE approximation: the state always lies on the maximum-entropy manifold subject to slow constraints.
- ad hoc to paper The diverse nonequilibrium frameworks cited have indeed converged to SEA structure.
Cite this review
Pith. "Pith review of The fourth law of thermodynamics: steepest entropy ascent." pith.science (2026). https://pith.science/paper/ARMBS33G
@misc{pith2026190805768,
author = {Pith},
title = {Pith review of: The fourth law of thermodynamics: steepest entropy ascent},
year = {2026},
howpublished = {\url{https://pith.science/paper/ARMBS33G}},
note = {Machine review of arXiv:1908.05768}
}
read the original abstract
When thermodynamics is understood as the science (or art) of constructing effective models of natural phenomena by choosing a minimal level of description capable of capturing the essential features of the physical reality of interest, the scientific community has identified a set of general rules that the model must incorporate if it aspires to be consistent with the body of known experimental evidence. Some of these rules are believed to be so general that we think of them as laws of Nature, such as the great conservation principles, whose "greatness" derives from their generality, as masterfully explained by Feynman in one of his legendary lectures. The second law of thermodynamics is universally contemplated among the great laws of Nature. In this paper we show that, in the past four decades, an enormous body of scientific research devoted to modeling the essential features of nonequilibrium natural phenomena has converged from many different directions and frameworks towards the general recognition (albeit still expressed in different but equivalent forms and language) that another rule is also indispensable and reveals another great law of Nature that we propose to call the \caporali{fourth law of thermodynamics}. We state it as follows: every nonequilibrium state of a system or local subsystem for which entropy is well-defined must be equipped with a metric in state space with respect to which the irreversible component of its time evolution is in the direction of steepest entropy ascent compatible with the conservation constraints. To illustrate the power of the fourth law, we derive (nonlinear) extensions of Onsager reciprocity and fluctuation-dissipation relations to the far-nonequilibrium realm within the framework of the rate-controlled constrained-equilibrium (RCCE) approximation (also known as the quasi-equilibrium approximation).
Reference graph
Works this paper leans on
-
[1]
The Character of Physical Law
Feynman RP. 1964 The great conservation principles. In the Messenger Lectures series titled “The Character of Physical Law” given at Cornell University by Richard Feynman and recorded by BBC. London: BBC
1964
-
[2]
1950 The nature of physical reality: A philosophy of modern physics
Margenau H. 1950 The nature of physical reality: A philosophy of modern physics. New York, NY: McGraw Hill
1950
-
[3]
2005Thermodynamics: Foundations and applications
Gyftopoulos EP, Beretta GP. 2005Thermodynamics: Foundations and applications. Mineola, NY: Dover Publications
-
[4]
1976 A unified quantum theory of mechanics and thermodynamics
Hatsopoulos GN, Gyftopoulos EP. 1976 A unified quantum theory of mechanics and thermodynamics. Part IIa. Available energy.Found. Phys. 6 127–141. doi:10.1007/BF00708955
-
[5]
2014 Recent progress in the definition of thermodynamic entropy.Entropy 16 1547–1570
Zanchini E, Beretta GP. 2014 Recent progress in the definition of thermodynamic entropy.Entropy 16 1547–1570. doi:10.3390/e16031547
-
[6]
Beretta GP, Zanchini E. 2019 New definitions of thermodynamic temperature and entropy not based on the concepts of heat and thermal reservoir.Atti della Accademia Peloritana dei Pericolanti-Classe di Scienze Fisiche Matematiche e Naturali. 97 (Suppl.1) A1. doi:10.1478/AAPP.97S1A1
-
[7]
1998 General projection operator formalism for the dynamics and thermodynamics of complex fluids.Phys
Öttinger HC. 1998 General projection operator formalism for the dynamics and thermodynamics of complex fluids.Phys. Rev. E 57 1416. doi:10.1103/PhysRevE.57.1416
-
[8]
2014 Contact geometry of mesoscopic thermodynamics and dynamics.Entropy 161652-1686
Grmela M. 2014 Contact geometry of mesoscopic thermodynamics and dynamics.Entropy 161652-1686. doi:10.3390/e16031652
Show all 115 references
-
[9]
2014 Time reversal in nonequilibrium thermodynamics.Phys
Pavelka M, Klika V, Grmela M. 2014 Time reversal in nonequilibrium thermodynamics.Phys. Rev. E 90 062131. doi:10.1103/PhysRevE.90.062131
2014 doi
-
[10]
2018 Coarse-graining via the fluctuation-dissipation theorem and large-deviation theory
Montefusco A, Peletier MA, Öttinger HC. 2018 Coarse-graining via the fluctuation-dissipation theorem and large-deviation theory. arXiv:1809.07253
2018 arXiv
-
[11]
2007 Comparison of invariant manifolds for model reduction in chemical kinetics.Commun
Chiavazzo E, Gorban AN, Karlin IV. 2007 Comparison of invariant manifolds for model reduction in chemical kinetics.Commun. Comput. Phys.2 964–992
2007
-
[12]
2010 Minimal curvature trajectories: Riemannian geometry concepts for slow manifold computation in chemical kinetics
Lebiedz D, Reinhardt V, Siehr J. 2010 Minimal curvature trajectories: Riemannian geometry concepts for slow manifold computation in chemical kinetics. J. Comput. Phys. 229 6512–6533. doi:10.1016/j.jcp.2010.05.008
2010 doi
-
[13]
Hiremath V, S. B. Pope SB. 2013 A study of the rate-controlled constrained-equilibrium dimen- sion reduction method and its different implementations. Combust. Theory Model. 17 260–293. doi:10.1080/13647830.2012.752109 12
2013
-
[14]
2018 Systematic constraint selection strategy for rate-controlled constrained-equilibrium modeling of complex nonequilibrium chemical kinetics
Beretta GP, Rivadossi L, Janbozorgi M. 2018 Systematic constraint selection strategy for rate-controlled constrained-equilibrium modeling of complex nonequilibrium chemical kinetics. J. Non-Equilib. Thermodyn. 43 121–130. doi:10.1515/jnet-2017-0055
2018 doi
-
[15]
1976 A unified quantum theory of mechanics and thermodynamics
Hatsopoulos GN, Gyftopoulos EP. 1976 A unified quantum theory of mechanics and thermodynamics. Part I. Postulates.Found. Phys. 6 15–31. doi:10.1007/BF00708660
1976 doi
-
[16]
1976 A unified quantum theory of mechanics and thermodynamics
Hatsopoulos GN, Gyftopoulos EP. 1976 A unified quantum theory of mechanics and thermodynamics. Part IIb. Stable equilibrium states.Found. Phys. 6 439–455. doi:10.1007/BF00715033
1976 doi
-
[17]
1976 A unified quantum theory of mechanics and thermodynamics
Hatsopoulos GN, Gyftopoulos EP. 1976 A unified quantum theory of mechanics and thermodynamics. Part III. Irreducible quantal dispersions.Found. Phys. 6 561–570. doi:10.1007/BF00715108
1976 doi
-
[18]
1999 The physics and mathematics of the second law of thermodynamics.Phys
Lieb EH, Yngvason J. 1999 The physics and mathematics of the second law of thermodynamics.Phys. Reps. 310 1–96. doi:10.1016/S0370-1573(98)00082-9
1999 doi
-
[19]
2013 The entropy concept for nonequilibrium states.Proc
Lieb EH, Yngvason J. 2013 The entropy concept for nonequilibrium states.Proc. Royal Society A469 20139408. doi:10.1098/rspa.2013.0408
2013
-
[20]
2014 Entropy meters and the entropy of non-extensive systems.Proc
Lieb EH, Yngvason J. 2014 Entropy meters and the entropy of non-extensive systems.Proc. Royal Society A 470 20140192.doi:10.1098/rspa.2014.0192
2014
-
[21]
2015 What is the second law? ASME Journal of Energy Resources Technology 137 021003
Gyftopoulos EP, Beretta GP. 2015 What is the second law? ASME Journal of Energy Resources Technology 137 021003. doi:10.1115/1.4026379
2015 doi
-
[22]
2015 The second laws of quantum thermodynamics
Brandao F, Horodecki M, Ng N, Oppenheim J, Wehner S. 2015 The second laws of quantum thermodynamics. PNAS 112 3275–3279. doi:10.1073/pnas.1411728112
2015 doi
-
[23]
2016 Axiomatic relation between thermodynamic and information-theoretic entropies.Phys
Weilenmann M, Krämer L, Faist P, Renner R. 2016 Axiomatic relation between thermodynamic and information-theoretic entropies.Phys. Rev. Lett.117 260601. doi:10.1103/PhysRevLett.117.260601
2016 doi
-
[24]
2008 Where is the entropy challenge?AIP Conf
Hatsopoulos GN, Beretta GP. 2008 Where is the entropy challenge?AIP Conf. Proc. Series 1033 34–54. doi:10.1063/1.2979057
2008 doi
-
[25]
1965Principles of general thermodynamics
Hatsopoulos GN, Keenan JH. 1965Principles of general thermodynamics. New York: Wiley
-
[26]
1979Thermionic Energy Conversion, Vol
Hatsopoulos GN, Gyftopoulos EP. 1979Thermionic Energy Conversion, Vol. 2, Theory, Technology, and Application. Cambridge, MA: MIT Press
-
[27]
2005Thermodynamics: Fundamentals for applications
O’Connell JP, Haile JM. 2005Thermodynamics: Fundamentals for applications. Cambridge University Press
-
[28]
2005 Statistical Thermodynamics and Stochastic Theory of Nonequilibrium Systems
Ebeling W, Sokolov IM. 2005 Statistical Thermodynamics and Stochastic Theory of Nonequilibrium Systems. Singapore: World Scientific
2005
-
[29]
2008Understanding non-equilibrium thermodynamics
Lebon G, Jou D, Casas-Vázquez J. 2008Understanding non-equilibrium thermodynamics. Foundations, applications, frontiers. (Vol. 295). Berlin: Springer
-
[30]
2008Non-equilibrium thermodynamics of heterogeneous systems
Kjelstrup S, Bedeaux D. 2008Non-equilibrium thermodynamics of heterogeneous systems. Singapore: World Scientific
-
[31]
2015 What is heat?ASME Journal of Energy Resources Technology137 021006
Beretta GP, Gyftopoulos EP. 2015 What is heat?ASME Journal of Energy Resources Technology137 021006. http://dx.doi.org/10.1115/1.4026382
2015 doi
-
[32]
2008 Local effective dynamics of quantum systems: A generalized approach to work and heat.EPL, Europhys
Weimer H, Henrich MJ, Rempp F, Schröder H, Mahler G. 2008 Local effective dynamics of quantum systems: A generalized approach to work and heat.EPL, Europhys. Lett.83 30008. doi:10.1209/0295- 5075/83/30008
2008 doi
-
[33]
2012 Quantum refrigerators and the third law of thermodynamics.Phys
Levy A, Alicki R, Kosloff R. 2012 Quantum refrigerators and the third law of thermodynamics.Phys. Rev. E 85 061126. doi:10.1103/PhysRevE.85.061126 13
2012 doi
-
[34]
2014 Work extraction and thermodynamics for individual quantum systems
Skrzypczyk P, Short AJ, Popescu S. 2014 Work extraction and thermodynamics for individual quantum systems. Nature Commun. 5 4185. doi: 10.1038/ncomms5185
2014 doi
-
[35]
2015 Quantum thermodynamics of general quantum processes
Binder F, Vinjanampathy S, Modi K, Goold J. 2015 Quantum thermodynamics of general quantum processes. Phys. Rev. E 91 032119. doi 10.1103/PhysRevE.91.032119
2015 doi
-
[36]
2015 Nature of heat in strongly coupled open quantum systems
Esposito M, Ochoa MA, Galperin M. 2015 Nature of heat in strongly coupled open quantum systems. Phys. Rev. B92 235440. doi:10.1103/PhysRevB.92.235440
2015 doi
-
[37]
2017 Resource theory for work and heat.Phys
Sparaciari C, Oppenheim J, Fritz T. 2017 Resource theory for work and heat.Phys. Rev. A96 052112. doi:10.1103/PhysRevA.96.052112
2017 doi
-
[38]
2013 Resource theory of quantum states out of thermal equilibrium.Phys
Brandao FG, Horodecki M, Oppenheim J, Renes JM, Spekkens RW. 2013 Resource theory of quantum states out of thermal equilibrium.Phys. Rev. Lett111 250404. 10.1103/PhysRevLett.111.250404
2013 doi
-
[39]
2016 Beyond heat baths: Generalized resource theories for small-scale thermodynamics
Yunger-Halpern N, Renes JM. 2016 Beyond heat baths: Generalized resource theories for small-scale thermodynamics. Phys. Rev. E 93 022126. doi:10.1103/PhysRevE.93.022126
2016 doi
-
[40]
2002 Entropy and temperature of a quantum Carnot engine.Proc
Bender CM, Brody DC, Meister BK. 2002 Entropy and temperature of a quantum Carnot engine.Proc. R. Soc. Lond. A458 1519–1526. doi:10.1098/rspa.2001.0928
2002
-
[41]
2011 Entropy of isolated quantum systems after a quench.Phys
Santos LF, Polkovnikov A, Rigol M. 2011 Entropy of isolated quantum systems after a quench.Phys. Rev. Lett 107 040601. doi:10.1103/PhysRevLett.107.040601
2011 doi
-
[42]
2011 Rigorous and general definition of thermodynamic entropy in thermodynamics
Beretta GP, Zanchini E. 2011 Rigorous and general definition of thermodynamic entropy in thermodynamics. In Thermodynamics. Tadashi M, Ed., Rijeka: InTechOpen, pp. 23–50. doi:10.5772/13371
2011 doi
-
[43]
2015 What is a simple system? ASME Journal of Energy Resources Technology 137 021007
Beretta GP, Gyftopoulos EP. 2015 What is a simple system? ASME Journal of Energy Resources Technology 137 021007. doi:10.1115/1.4026383
2015 doi
-
[44]
2015 Thermal equilibrium of a macroscopic quantum system in a pure state.Phys
Goldstein S, Huse DA, Lebowitz JL, Tumulka R. 2015 Thermal equilibrium of a macroscopic quantum system in a pure state.Phys. Rev. Lett115 100402. doi:10.1103/PhysRevLett.115.100402
2015 doi
-
[45]
2017 Stochastic and macroscopic thermodynamics of strongly coupled systems.Phys
Jarzynski C. 2017 Stochastic and macroscopic thermodynamics of strongly coupled systems.Phys. Rev. X 7 011008. doi:10.1103/PhysRevX.7.011008
2017 doi
-
[46]
ZanchiniE.1986Onthedefinitionofextensivepropertyenergybythefirstpostulateofthermodynamics. Found. Phys. 16 923–935. doi:10.1007/BF00765339
-
[47]
1988 Thermodynamics: energy of closed and open systems
Zanchini E. 1988 Thermodynamics: energy of closed and open systems. Il Nuovo Cimento B 101 453–465. doi:10.1007/BF02828923
1988 doi
-
[48]
1992 Thermodynamics: energy of nonsimple systems and second postulate
Zanchini E. 1992 Thermodynamics: energy of nonsimple systems and second postulate. Il Nuovo Cimento B 107 123–139. doi:10.1007/BF02722911
1992 doi
-
[49]
1971 General state changes in quantum theory.Ann
Kraus K. 1971 General state changes in quantum theory.Ann. Phys. 64 311–335. doi:10.1016/ 0003- 4916(71)90108-4. doi:10.1016/0003-4916(71)90108-4
1971 doi
-
[50]
1972 On quantum statistical mechanics of non-Hamiltonian systems.Rep
Kossakowski A. 1972 On quantum statistical mechanics of non-Hamiltonian systems.Rep. Math. Phys. 3 247–274. doi:10.1016/0034-4877(72)90010-9
1972 doi
-
[51]
1975 On the connection of nonequilibrium information thermodynamics with non-Hamiltonian quantum mechanics of open systems.Ann
Ingarden RS, Kossakowski A. 1975 On the connection of nonequilibrium information thermodynamics with non-Hamiltonian quantum mechanics of open systems.Ann. Phys. 89 451–485. doi:10.1016/0003- 4916(75)90190-6
1975 doi
-
[52]
1976 On the generators of quantum dynamical semigroups.Commun
Lindblad G. 1976 On the generators of quantum dynamical semigroups.Commun. Math. Phys. 119 119–130. doi:10.1063/1.523789
1976 doi
-
[53]
1976 Completely positive dynamical semigroups of N-level systems
Gorini V, Kossakowski A, Sudarshan ECG. 1976 Completely positive dynamical semigroups of N-level systems. J. Math. Phys.17 821–825. doi:10.1063/1.522979 14
1976 doi
-
[54]
SpohnH.1976ApproachtoequilibriumforcompletelypositivedynamicalsemigroupsofN-levelsystems. Rep. Math. Phys.10 189–194. doi:10.1016/0034-4877(76)90040-9
-
[55]
2010 Maximum entropy production rate in quantum thermodynamics.J
Beretta GP. 2010 Maximum entropy production rate in quantum thermodynamics.J. Phys. Conf. Ser. 237 012004. doi:10.1088/1742-6596/237/1/012004
2010 doi
-
[56]
2007 Well-behaved nonlinear evolution equation for steepest-entropy-ascent dissipative quantum dynamics.Int
Beretta GP. 2007 Well-behaved nonlinear evolution equation for steepest-entropy-ascent dissipative quantum dynamics.Int. J. Quantum Inf.5 249–255. doi:10.1142/S0219749907002700
2007 doi
-
[57]
2015 Steepest-entropy-ascent quantum thermodyna- mic modeling of decoherence in two different microscopic composite systems.Phys
Cano-Andrade S, Beretta GP, von Spakovsky MR. 2015 Steepest-entropy-ascent quantum thermodyna- mic modeling of decoherence in two different microscopic composite systems.Phys. Rev. A91 013848. doi:10.1103/PhysRevA.91.013848
2015 doi
-
[58]
Smith C. 2016 Comparing the models of steepest entropy ascent quantum thermodynamics, master equation and the difference equation for a simple quantum system interacting with reservoirs.Entropy 18 176. doi:10.3390/e18050176
2016 doi
-
[59]
1985 Quantum thermodynamics
Beretta GP, Gyftopoulos EP, Park JL. 1985 Quantum thermodynamics. A new equation of motion for a general quantum system.Nuovo Cimento B 87 77–97
1985
-
[60]
2009 Nonlinear quantum evolution equations to model irreversible adiabatic relaxation with maximal entropy production and other nonunitary processes
Beretta GP. 2009 Nonlinear quantum evolution equations to model irreversible adiabatic relaxation with maximal entropy production and other nonunitary processes. Rep. Math. Phys. 64 139–168. doi:10.1016/S0034-4877(09)90024-6
2009 doi
-
[61]
1873 A method of geometrical representation of the thermodynamic properties by means of surfaces
Gibbs JW. 1873 A method of geometrical representation of the thermodynamic properties by means of surfaces. Transactions of Connecticut Academy of Arts and Sciences2 382–404
-
[62]
1980Statistical Physics, Part I
Landau LD, Lifshitz EM. 1980Statistical Physics, Part I. Elmsford, NY: Pergamon press
-
[63]
2013 Non-equilibrium thermodynamics in multiphase flows New York, NY: Springer
Mauri R. 2013 Non-equilibrium thermodynamics in multiphase flows New York, NY: Springer. doi:10.1007/978-94-007-5461-4
2013 doi
-
[64]
2015 What is the third law? ASME Journal of Energy Resources Technology 137 021004
Beretta GP, Gyftopoulos EP. 2015 What is the third law? ASME Journal of Energy Resources Technology 137 021004. doi:10.1115/1.4026380
2015 doi
-
[65]
2014 Steepest Entropy Ascent Model for Far-Non-Equilibrium Thermodynamics
Beretta GP. 2014 Steepest Entropy Ascent Model for Far-Non-Equilibrium Thermodynamics. Uni- fied Implementation of the Maximum Entropy Production Principle. Phys. Rev. E 90 042113. doi:10.1103/PhysRevE.90.042113
2014 doi
-
[66]
1971 Rate-controlled partial-equilibrium method for treating reacting gas mixtures
Keck JC, Gillespie D. 1971 Rate-controlled partial-equilibrium method for treating reacting gas mixtures. Combustion and Flame 17 237–241. doi:10.1016/S0010-2180(71)80166-9
1971 doi
-
[67]
1990 Rate-controlled constrained-equilibrium theory of chemical reactions in complex systems
Keck JC. 1990 Rate-controlled constrained-equilibrium theory of chemical reactions in complex systems. Progress in Energy and Combustion Science16 125–154. doi:10.1016/0360-1285(90)90046-6
1990 doi
-
[68]
2012 The Rate-controlled constrained-equilibrium approach to far-from-local-equilibrium thermodynamics.Entropy 14 92–130
Beretta GP, Keck JC, Janbozorgi M, Metghalchi H. 2012 The Rate-controlled constrained-equilibrium approach to far-from-local-equilibrium thermodynamics.Entropy 14 92–130. doi:10.3390/e14020092
2012 doi
-
[69]
2001 Corrections and enhancements of quasi-equilibrium states J
Gorban AN, Karlin IV, Ilg P, Öttinger HC. 2001 Corrections and enhancements of quasi-equilibrium states J. Non-Newtonian Fluid Mech.96 203–219. doi:10.1016/S0377-0257(00)00135-X
2001 doi
-
[70]
1964 On the macroscopic description of kinetic processes (in russian).Dokl
Kogan AM, Rozonoer LI. 1964 On the macroscopic description of kinetic processes (in russian).Dokl. Akad. Nauk SSSR158 566–569
1964
-
[71]
2019 Dynamic maximum entropy reductionEntropy 21 715
Klika V, Pavelka M, Vágner P, Grmela M. 2019 Dynamic maximum entropy reductionEntropy 21 715. doi:10.3390/e21070715
2019 doi
-
[72]
Li G, von Spakovsky MR. 2016 Steepest-entropy-ascent quantum thermodynamic modeling of the re- laxation process of isolated chemically reactive systems using density of states and the concept of hypoequilibrium state.Phys. Rev. E 93 012137. doi:10.1103/PhysRevE.93.012137 15
2016 doi
-
[73]
2005 Maximum entropy production and the fluctuation theorem.J
Dewar RC. 2005 Maximum entropy production and the fluctuation theorem.J. Phys. A: Math. Gen. 38 L371–L381. doi:10.1088/0305-4470/38/21/L01
2005 doi
-
[74]
2013 Entropy and entropy production: Old misconceptions and new breakthroughs
Martyushev LM. 2013 Entropy and entropy production: Old misconceptions and new breakthroughs. Entropy 15 1152–1170. doi:10.3390/e15041152
2013 doi
-
[75]
1980 The Maxwell-Vlasov equations as a continuous Hamiltonian system.Phys
Morrison PJ. 1980 The Maxwell-Vlasov equations as a continuous Hamiltonian system.Phys. Lett. A 80 383–386. doi:10.1016/0375-9601(80)90776-8
1980 doi
-
[76]
1982 The Hamiltonian structure of the Maxwell-Vlasov equations.Physica D 4 394–406
Marsden JE, Weinstein A. 1982 The Hamiltonian structure of the Maxwell-Vlasov equations.Physica D 4 394–406. doi:10.1016/0167-2789(82)90043-4
1982 doi
-
[77]
1984 Dissipative hamiltonian systems: A unifying principle.Phys
Kaufman AN. 1984 Dissipative hamiltonian systems: A unifying principle.Phys. Lett. A100, 419–422. doi:10.1016/0375-9601(84)90634-0
1984 doi
-
[78]
1984 Bracket formulation for irreversible classical fields.Phys
Morrison PJ. 1984 Bracket formulation for irreversible classical fields.Phys. Lett. A 100, 423–427. doi:10.1016/0375-9601(84)90635-2
1984 doi
-
[79]
1984 Bracket formulation of dissipative fluid mechanics equations.Phys
Grmela M. 1984 Bracket formulation of dissipative fluid mechanics equations.Phys. Lett. A102, 355–
1984
-
[80]
1987 Steepest entropy ascent in quantum thermodynamics.Lecture Notes in Physics278 441–443
Beretta GP. 1987 Steepest entropy ascent in quantum thermodynamics.Lecture Notes in Physics278 441–443. doi:10.1007/3-540-17894-5_404
1987 doi
-
[81]
1985 Entropy and irreversibility for a single isolated two-level system
Beretta GP. 1985 Entropy and irreversibility for a single isolated two-level system. New indivi- dual quantum states and new nonlinear equation of motion. Int. J. Theor. Phys. 24 119–134. doi:10.1007/BF00672647
1985 doi
-
[82]
1984 A general nonlinear evolution equation for irreversible conservative approach to stable equilibrium
Beretta GP. 1984 A general nonlinear evolution equation for irreversible conservative approach to stable equilibrium. Proceedings of the NATO Advanced Study Institute on the Frontiers of Nonequilibrium Statistical Physics, June 3-16, 1984, Santa Fe, New Mexico, Moore GT, Scull...
1984 doi
-
[83]
1986 A paradigm for joined Hamiltonian and dissipative systems.Physica D 18 410–419
Morrison PJ. 1986 A paradigm for joined Hamiltonian and dissipative systems.Physica D 18 410–419. doi:10.1016/0167-2789(86)90209-5
1986 doi
-
[84]
2007 Metriplectic structure, Leibniz dynamics and dissipative systems.J
Guha P. 2007 Metriplectic structure, Leibniz dynamics and dissipative systems.J. Math. Anal. App. 326 121–136. doi: 10.1016/j.jmaa.2006.02.023
2007 doi
-
[85]
Entropy 18 304
MaterassiM.2016Entropyasametricgeneratorofdissipationincompletemetriplecticsystems. Entropy 18 304. doi:10.3390/e18080304
-
[86]
1997 Dynamics and thermodynamics of complex fluids
Grmela M, Öttinger HC. 1997 Dynamics and thermodynamics of complex fluids. I. Development of a general formalism.Phys. Rev. E 56 6620. doi:10.1103/PhysRevE.56.6620
1997 doi
-
[87]
Montefusco A, Consonni, Beretta GP. 2015 Essential equivalence of the general equation for the nonequi- librium reversible-irreversible coupling (GENERIC) and steepest-entropy-ascent models of dissipation for nonequilibrium thermodynamics,Phys. Rev. E 91 042138. doi:10.1103/Ph...
2015 doi
-
[88]
1998 The variational formulation of the Fokker–Planck equation
Jordan R, Kinderlehrer D, Otto F. 1998 The variational formulation of the Fokker–Planck equation. SIAM J. Math. Anal.29, 1–17. doi:10.1137/S0036141096303359
1998 doi
-
[89]
2001 The geometry of dissipative evolution equations: The porous medium equation.Commun
Otto F. 2001 The geometry of dissipative evolution equations: The porous medium equation.Commun. Partial Differ. Equ.26, 101–174. doi:10.1081/PDE-100002243
2001 doi
-
[90]
2011 A gradient structure for reaction–diffusion systems and for energy-drift-diffusion systems
Mielke F. 2011 A gradient structure for reaction–diffusion systems and for energy-drift-diffusion systems. Nonlinearity 24, 1329–1346. doi:10.1088/0951-7715/24/4/016
2011 doi
-
[91]
Peletier MA, Johannes Zimmer J
Duong MH, Mark A. Peletier MA, Johannes Zimmer J. 2013 GENERIC formalism of a Vlasov- Fokker-Planck equation and connection to large-deviation principles. Nonlinearity 26 2951–2971. doi:10.1088/0951-7715/26/11/2951 16
2013 doi
-
[92]
2014 On the relation between gradient flows and the large- deviation principle, with applications to Markov chains and diffusion.Potential Anal
Mielke A, Peletier MA, Renger DRM. 2014 On the relation between gradient flows and the large- deviation principle, with applications to Markov chains and diffusion.Potential Anal. 41, 1293–1327. doi:10.1007/s11118-014-9418-5
2014 doi
-
[93]
2015 Entropy production and the geometry of dissipative evolution equations.Phys
Reina C, Zimmer J. 2015 Entropy production and the geometry of dissipative evolution equations.Phys. Rev. E 92 052117. doi:10.1103/PhysRevE.92.052117
2015 doi
-
[94]
2018 Computing diffusivities from particle models out of equili- brium
Embacher P, Dirr N, Zimmer J, Reina C. 2018 Computing diffusivities from particle models out of equili- brium. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences474(2212)
2018
-
[95]
2016 Microcanonical and resource-theoretic deri- vations of the thermal state of a quantum system with noncommuting charges.Nat
Yunger Halpern N, Faist P, Oppenheim J, Winter A. 2016 Microcanonical and resource-theoretic deri- vations of the thermal state of a quantum system with noncommuting charges.Nat. Commun. 7 12051. doi:10.1038/ncomms12051
2016 doi
-
[96]
1984 Quantum thermodynamics
Beretta GP, Gyftopoulos EP, Park JL, Hatsopoulos GN. 1984 Quantum thermodynamics. A new equation of motion for a single constituent of matter. Nuovo Cimento B 82 169–191. doi:10.1007/BF02732871
1984 doi
-
[97]
2001 Nonlinear quantum evolution with maximal entropy productionPhys
Gheorghiu-Svirschevski S. 2001 Nonlinear quantum evolution with maximal entropy productionPhys. Rev. A 63 022105. doi:10.1103/PhysRevA.63.022105
2001 doi
-
[98]
Nonlinear quantum evolution with maximal entropy production
Gheorghiu-Svirschevski S. 2001 Addendum to “Nonlinear quantum evolution with maximal entropy production.”Phys. Rev. A63 054102. doi:10.1103/PhysRevA.63.054102
2001 doi
-
[99]
1996 Microscale theory of surface tension
Antanovskii LK. 1996 Microscale theory of surface tension. Phys. Rev. E 54 6285. doi:10.1103/PhysRevE.54.6285
1996 doi
-
[100]
2001 Weakly nonlocal irreversible thermodynamics—the Guyer–Krumhansl and the Cahn–Hilliard equations.Phys
Ván P. 2001 Weakly nonlocal irreversible thermodynamics—the Guyer–Krumhansl and the Cahn–Hilliard equations.Phys. Lett. A290 88–92. doi:10.1016/S0375-9601(01)00657-0
2001 doi
-
[101]
2008 Internal Variables and Dynamic Degrees of Freedom.J
Ván P, Berezovski A, Engelbrecht J. 2008 Internal Variables and Dynamic Degrees of Freedom.J. Non-Eq. Thermodynamics 33 235–254. doi:10.1515/JNETDY.2008.010
2008 doi
-
[102]
1987 From a least action principle to mass action law and extended affinity.Chem
Sieniutycz S. 1987 From a least action principle to mass action law and extended affinity.Chem. Eng. Sci. 42, 2697–2711. doi:10.1016/0009-2509(87)87020-3
1987 doi
-
[103]
1986 A theorem on Lyapunov stability for dynamical systems and a conjecture on a property of entropyJ
Beretta GP. 1986 A theorem on Lyapunov stability for dynamical systems and a conjecture on a property of entropyJ. Math. Phys.27 305–308. doi:10.1063/1.527390
1986 doi
-
[104]
2001 Change, time and information geometry
Caticha A. 2001 Change, time and information geometry. AIP Conf. Proc. 568 72. doi:10.1063/1.1381872
2001 doi
-
[105]
2005 Nonlinear extensions of Schroedinger-von Neumann quantum dynamics: A set of necessary conditions for compatibility with thermodynamics
Beretta GP. 2005 Nonlinear extensions of Schroedinger-von Neumann quantum dynamics: A set of necessary conditions for compatibility with thermodynamics. Mod. Phys. Lett. A 20 977–984. doi:10.1142/S0217732305017263
2005 doi
-
[106]
2019 Time–energy and time–entropy uncertainty relations in nonequilibrium quan- tum thermodynamics under steepest-entropy-ascent nonlinear master equations
Beretta GP. 2019 Time–energy and time–entropy uncertainty relations in nonequilibrium quan- tum thermodynamics under steepest-entropy-ascent nonlinear master equations. Entropy 21 679. doi:10.3390/e21070679
2019 doi
-
[107]
1987 Quantum thermodynamics of nonequilibrium
Beretta GP. 1987 Quantum thermodynamics of nonequilibrium. Onsager reciprocity and dispersion- dissipation relations.Found. Phys. 17 365–381. doi:10.1007/BF00733374
1987 doi
-
[108]
1985 Effect of irreversible atomic relaxation on resonance fluorescence, absorption and stimulated emission.Int
Beretta GP. 1985 Effect of irreversible atomic relaxation on resonance fluorescence, absorption and stimulated emission.Int. J. Theor. Phys.24 1233–1258. doi:10.1007/BF00670336
1985 doi
-
[109]
2006 Nonlinear model dynamics for closed-system, constrained, maximal- entropy-generation relaxation by energy redistribution
Beretta GP. 2006 Nonlinear model dynamics for closed-system, constrained, maximal- entropy-generation relaxation by energy redistribution. Phys. Rev. E 73 026113. doi:10.1103/PhysRevE.73.026113 17
2006 doi
-
[110]
2017 Model dynamics for quantum computing
Tabakin F. 2017 Model dynamics for quantum computing. Ann. Phys. 383 33–78. doi:10.1016/j.aop.2017.04.013
2017 doi
-
[111]
BhattacharyaS,MisraA,MukhopadhyayC,PatiAK.2017Exactmasterequationforaspininteracting with a spin bath: Non-Markovianity and negative entropy production rate.Phys. Rev. A 95 012122. doi:10.1103/PhysRevA.95.012122
-
[112]
2010 Entropy production as correlation between system and reservoir.New J
Esposito M, Lindenberg K, Van den Broeck C. 2010 Entropy production as correlation between system and reservoir.New J. Phys.12 013013. doi:10.1088/1367-2630/12/1/013013
2010 doi
-
[113]
1985 Uniting mechanics and statistics.Nature 316 11
Maddox J. 1985 Uniting mechanics and statistics.Nature 316 11. doi:10.1038/316011a0 18
1985 doi
-
[358]
doi:10.1016/0375-9601(84)90297-4
-
[694]
doi:10.1098/rspa.2017.0694
2017
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