Scalar Field Reconstructions of Standard, Power Law and Logarithmic Holographic Dark Energy with a Gauss-Bonnet IR cut-off
Pith reviewed 2026-05-20 09:20 UTC · model grok-4.3
The pith
Holographic dark energy with a Gauss-Bonnet infrared cutoff corresponds to tachyon, quintessence and other scalar field models
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
Core claim
By taking the infrared cutoff to be L equal to the inverse fourth root of the Gauss-Bonnet invariant, the holographic dark energy density is defined and its equation of state, deceleration parameter and density evolution are derived for the standard, power law and logarithmic cases. These quantities are obtained both for flat and non-flat universes and for interacting and non-interacting dark sectors. In the dark-energy-dominated limit the asymptotic forms are given. Correspondences are then established by constructing the scalar field and potential for each of the listed models so that they reproduce the same energy density and pressure as the holographic models.
What carries the argument
The Gauss-Bonnet infrared cutoff L = G^{-1/4} that determines the holographic dark energy density and permits the scalar field reconstructions for multiple models.
Load-bearing premise
The choice of the infrared cutoff as the inverse fourth root of the Gauss-Bonnet invariant, which is adopted to enable the derivations without additional justification from observations or theory.
What would settle it
High-precision measurements of the dark energy equation of state parameter at low redshifts that fall outside the ranges obtained from the asymptotic analysis or the explicit expressions for any of the HDE models would disprove the claimed scalar field correspondences.
read the original abstract
In this paper, we investigate the Holographic Dark Energy (HDE) model and its entropy-corrected versions, namely the Power Law and Logarithmic entropy corrected HDE models, by considering the infrared cut-off $L=\mathcal{G}^{-1/4}$, where $\mathcal{G}$ is the Gauss-Bonnet invariant. We derived the Equation of State parameter $\omega_D$, the deceleration parameter $q$ and the evolutionary form of the fractional energy density of DE $\Omega_D'$ for flat and non-flat universes, with and without interaction between DE and Dark Matter. We also analyzed the asymptotic behavior in the DE dominated epoch. Furthermore, correspondences between the considered HDE models and several scalar field models, including tachyon, k-essence, quintessence, Generalized Chaplygin Gas, Yang-Mills, and Nonlinear Electrodynamics models, were established.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The manuscript investigates the standard, power-law, and logarithmic holographic dark energy (HDE) models using an infrared cutoff L = G^{-1/4}, where G is the Gauss-Bonnet invariant. It derives the equation of state ω_D, deceleration parameter q, and the evolution of the dark energy density parameter Ω_D' for both flat and non-flat universes, considering cases with and without interaction between dark energy and dark matter. Additionally, the paper analyzes the asymptotic behavior in the dark energy dominated epoch and establishes correspondences between these HDE models and several scalar field models, including tachyon, k-essence, quintessence, Generalized Chaplygin Gas, Yang-Mills, and Nonlinear Electrodynamics models.
Significance. The paper offers a detailed analysis by considering multiple variants of HDE (standard, power law, logarithmic) with interaction terms and both flat and non-flat geometries, along with explicit mappings to a range of scalar field models. This systematic approach is a strength if the underlying cutoff is accepted. The results could aid in comparing different dark energy descriptions, but the overall significance depends on addressing the motivation for the specific IR cutoff choice.
major comments (1)
- [Model definition / abstract] Model definition (as introduced in the abstract and setup): The infrared cutoff is taken to be L = G^{-1/4} where G is the Gauss-Bonnet invariant. This choice is introduced without independent observational or theoretical justification beyond enabling the subsequent derivations. Since all derived quantities (ω_D, q, Ω_D') and the scalar-field correspondences rest on this specific scale, the lack of motivation from the holographic bound, Gauss-Bonnet cosmology, or data makes the mappings algebraic identities rather than physically motivated reconstructions.
minor comments (2)
- [Notation] Ensure consistent notation for the Gauss-Bonnet invariant throughout (e.g., script G vs plain G).
- [References] Add citations to prior literature on Gauss-Bonnet invariants as IR cutoffs in holographic models to better situate the choice.
Simulated Author's Rebuttal
We thank the referee for the thorough and constructive review of our manuscript. We address the major comment regarding the motivation for the infrared cutoff in detail below and will revise the manuscript accordingly to strengthen the presentation.
read point-by-point responses
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Referee: Model definition (as introduced in the abstract and setup): The infrared cutoff is taken to be L = G^{-1/4} where G is the Gauss-Bonnet invariant. This choice is introduced without independent observational or theoretical justification beyond enabling the subsequent derivations. Since all derived quantities (ω_D, q, Ω_D') and the scalar-field correspondences rest on this specific scale, the lack of motivation from the holographic bound, Gauss-Bonnet cosmology, or data makes the mappings algebraic identities rather than physically motivated reconstructions.
Authors: We appreciate the referee's observation on the need for clearer motivation. The cutoff L = 𝒢^{-1/4} is selected because the Gauss-Bonnet invariant 𝒢 has dimensions of length^{-4}, yielding an infrared scale L with the correct dimensions required by the holographic principle (ρ_D ∝ L^{-2}). This extends standard HDE constructions to the context of Gauss-Bonnet gravity, where curvature invariants naturally define characteristic scales. We acknowledge, however, that the manuscript would benefit from an explicit discussion of this rationale. In the revised version we will add a dedicated paragraph in the introduction that derives the dimensional consistency, references prior literature on holographic models in modified gravity, and explains why this choice is physically motivated rather than ad hoc, thereby framing the subsequent derivations and scalar-field correspondences as arising from a motivated cutoff. revision: yes
Circularity Check
No significant circularity; derivations follow from stated model assumptions
full rationale
The paper defines the HDE models using the explicit IR cut-off choice L = G^{-1/4} and derives ω_D, q, and Ω_D' directly from the resulting energy density ρ_D = 3c²M_p²/L². Scalar-field correspondences are then obtained by matching this ρ_D and p_D = ω_D ρ_D to the energy density and pressure expressions of tachyon, k-essence, quintessence, GCG, Yang-Mills, and NED Lagrangians. This is a standard reconstruction procedure that does not reduce any output quantity to an input by algebraic identity or self-definition. The cut-off selection is an input assumption of the model rather than a fitted parameter or self-referential definition, and no load-bearing step relies on unverified self-citation or imported uniqueness theorems. The chain remains self-contained against the paper's own equations.
Axiom & Free-Parameter Ledger
free parameters (1)
- interaction coupling constant
axioms (2)
- domain assumption Universe is either flat or has small constant curvature
- ad hoc to paper Gauss-Bonnet invariant supplies a valid IR cutoff
Lean theorems connected to this paper
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IndisputableMonolith/Cost/FunctionalEquation.leanwashburn_uniqueness_aczel unclear?
unclearRelation between the paper passage and the cited Recognition theorem.
IR cut-off L = G^{-1/4} where G is the Gauss-Bonnet invariant... ρ_D = 3c² M_p² √G
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IndisputableMonolith/Foundation/AlexanderDuality.leanalexander_duality_circle_linking unclear?
unclearRelation between the paper passage and the cited Recognition theorem.
correspondences between the considered HDE models and several scalar field models
What do these tags mean?
- matches
- The paper's claim is directly supported by a theorem in the formal canon.
- supports
- The theorem supports part of the paper's argument, but the paper may add assumptions or extra steps.
- extends
- The paper goes beyond the formal theorem; the theorem is a base layer rather than the whole result.
- uses
- The paper appears to rely on the theorem as machinery.
- contradicts
- The paper's claim conflicts with a theorem or certificate in the canon.
- unclear
- Pith found a possible connection, but the passage is too broad, indirect, or ambiguous to say the theorem truly supports the claim.
Reference graph
Works this paper leans on
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Cosmological F ramework7
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Correspondence with Scalar Field Models14
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k-essence Scalar Field Model 20
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Generalized Chaplygin Gas (GCG) Model 25
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Yang-Mills (YM) Model 28
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Non Linear Electro-Dynamics (NLED) Model 32
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Conclusions 35 References 35 ∗Electronic address:toto.pasqua@gmail.com arXiv:2605.18934v1 [gr-qc] 18 May 2026 2
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INTRODUCTION Observational cosmology strongly indicates that the present Universe is undergoing a phase of accelerated expansion. This picture is supported by a wide variety of independent astrophysical observations, including Type Ia Supernovae (SNeIa) measurements [1, 2], anisotropies in the Cosmic Microwave Background (CMB) radiation detected by the Wi...
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non-flat interacting Universe. In Section 3, we establish a correspondence between our models and some scalar fields model, in particular the Tachyon, the k-essence, the Quintessence, the Generalized Chaplygin Gas (GCG), the Yang-Mills (YM) and the Nonlinear Electrodynamics (NLED) fields. Finally, in Section 4 we write the Conclusions
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COSMOLOGICAL FRAMEWORK We construct our cosmological model on the foundation of a non-flat Friedmann-Lemaˆ ıtre- Robertson-Walker (FLRW) geometry. The background spacetime is characterized by the following invariant line element: ds2 =−dt 2 +a 2(t) dr2 1−kr 2 +r 2 dθ2 + sin2 θdφ2 ,(20) 8 Probing the gravitational sector via the Einstein field equations yi...
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CORRESPONDENCE WITH SCALAR FIELD MODELS We now establish an explicit correspondence between the DE models we studied and several well- known scalar fields models, in particular the Tachyon, the k-essence, the Quintessence, the Gener- alized Chaplygin Gas (GCG), the Yang-Mills (YM) and the Nonlinear Electrodynamics (NLED) fields. Such correspondences are p...
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T achyon Scalar Field Model We start with the first scalar field model considered in this paper, the tachyon. In recent years, tachyon fields have attracted considerable attention in the context of early-Universe inflation and late-time cosmic acceleration, as they can also provide a viable candidate for DE [115– 118]. In string theory, the tachyon is int...
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k-essence Scalar Field Model A class of scalar field theories in which the kinetic contribution enters the Lagrangian in a non- standard (non-canonical) way is commonly referred to as k-essence. This framework was originally inspired by the Born–Infeld action arising in string theory and has been extensively employed to account for the observed late-time ...
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Quintessence Scalar Field Model In the quintessence framework, the late-time acceleration of the universe is accounted for by a minimally coupled, spatially homogeneous scalar fieldϕ(t) governed by an appropriate potential V(ϕ). The action describing this system is given by [12]: S= Z d4x√−g −1 2 gµν∂µϕ∂νϕ−V(ϕ) .(139) 23 By performing a variation of the a...
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Generalized Chaplygin Gas (GCG) Model Next, we focus on the Generalized Chaplygin Gas (GCG) framework. Initially, Kamenshchiket al.[126] introduced the standard Chaplygin Gas (CG) model, a homogeneous scenario characterized by a single fluid governed by the equation of state (EoS)p=− A0 ρ , wherepandρrepresent the fluid pressure and energy density, whileA...
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Y ang-Mills (YM) Model We now turn our attention to the Yang-Mills (YM) framework. In recent years, the YM field has been widely investigated as a compelling candidate to explain the nature of DE [136–139]. Two primary arguments motivate the choice of a YM field over standard scalar field prototypes. First, its physical foundations are more rigorously gro...
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Non Linear Electro-Dynamics (NLED) Model We now turn our attention to the final framework chosen for this study: the Non-Linear Electro- Dynamics (NLED) model. In recent years, non-linear extensions of Maxwell’s electromagnetic 33 theory have attracted significant interest as a novel approach to avoid primordial cosmic singu- larities. Indeed, exact solut...
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CONCLUSIONS In this paper, we considered the Holographic Dark Energy HDE model along with the Power Law and the Logarithmic entropy-corrected versions of the HDE model with IR cut-off equivalent toL=G −1/4, whereGindicates the Gauss-Bonnet invariant. The HDE scenario represents an important approach to understanding the nature of DE within the context of ...
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flat non-interacting Universe,
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non-flat interacting Universe. Furthermore, we investigated the corresponding limiting behavior in the Dark Energy dominated epoch of the Universe. Furthermore, we constructed correspondences between the HDE models considered in this work and several scalar field descriptions of DE, namely the tachyon, k-essence, quintessence, General- ized Chaplygin Gas ...
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discussion (0)
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