REVIEW 4 major objections 5 minor 103 references
Rotating and non-rotating AdS black holes in $f({\cal T})$ gravity non-linear electrodynamics
T0 review · 4 major / 5 minor · reviewed 2026-08-14 · deepseek-v4-flash
Pith's one-line read The paper derives exact d-dimensional AdS black holes in quadratic f(T) teleparallel gravity with nonlinear electrodynamics, with a milder central singularity than in General Relativity and entropy not proportional to horizon area.
desk verdict New family of AdS black holes in f(T)+NLED, but the singularity and entropy claims need correction and the diagonal vielbein needs a good-tetrad check. 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 argument rides on three pieces: the quadratic action $f(T)=a_0+a_1T+a_2T^2$; the diagonal vielbein ansatz (17) in cylindrical coordinates, which fixes the metric (18); and nonlinear electrodynamics in the dual Legendre representation, with the chosen potential $\aleph(r) = -P \,\mathrm{sech}^2(q_1/((d-3)m r^{d-3}))/r^{2(d-2)}$. The hyperbolic-secant form is what produces the higher-order charge terms and the deviation from linear electrodynamics; taking $q_1=0$ eliminates them. The field equations then fix $A(r)$, $g(r)$, and the gauge potential $q(r)$ self-consistently. The thermodynamic conclusion follows from the f(T) entropy formula $S=(1/4)A f_T$ with $f_T=a_1+2a_2T$, which makes the entropy depend on the torsion corrections rather than on area alone.
What would settle it
Take the same quadratic f(T) action and the same nonlinear electrodynamics potential, but solve the field equations in a non-diagonal cylindrical tetrad of the type recommended for f(T) gravity by refs [59,60], and check whether the metric function (33) still satisfies them; if the equations change, the claimed solution, milder singularity, and non-area entropy are frame artifacts.
Extended reading notes
Core claim
The paper's central claim is that new exact charged black hole solutions exist in quadratic teleparallel equivalent gravity with nonlinear electrodynamics. For the metric (18) in d dimensions, the field equations yield the metric function $A(r)$ with the asymptotic expansion $A(r) \approx \Lambda_{\mathrm{eff}} r^2 - M/r^{d-3} + Q^2/r^{2(d-3)} + Q_{14}/r^{3d-8} + Q_{24}/r^{4(d-3)}$, where the monopole and quadrupole terms are accompanied by higher-order terms sourced by the nonlinear electromagnetic field. Setting the parameter $q_1=0$ returns the linear-electrodynamics solution of ref [1], so the family is a one-parameter nonlinear electrodynamics deformation. Near $r=0$ the invariants $(K, R_{\mu\nu}R^{\mu\nu})$ behave as $r^{-4(d-2)}$ and $(R, T)$ as $r^{-2(d-2)}$, instead of the steeper GR/TEGR falloffs $r^{-2d}$ and $r^{-d}$, so the singularity is milder. The entropy, defined as $S=(1/4)A f_T$, is not proportional to the area and can be negative for some $q_1$ unless a constraint is imposed. The rotating counterpart is generated by a global coordinate transformation, preserving local geometry but changing global properties.
Load-bearing premise
The paper's conclusions stand or fall on whether the diagonal cylindrical coordinate frame used for the calculation is an allowed frame for f(T) gravity, since f(T) is not invariant under local frame rotations and an unallowed frame would make the resulting metric and its thermodynamic properties artifacts of that choice.
Editorial extensions
If this is right
- Setting $q_1=0$ reproduces the linear-electrodynamics charged AdS black holes of ref [1], so the new family is a one-parameter nonlinear electrodynamics deformation of that baseline.
- The curvature and torsion invariants diverge near $r=0$ as $r^{-4(d-2)}$ and $r^{-2(d-2)}$ rather than $r^{-2d}$ and $r^{-d}$, so the central singularity is softer in every dimension.
- The entropy is proportional to $f_T$ rather than to the horizon area alone, and it can become negative unless the nonlinearity parameter $q_1$ satisfies the bound derived at the event horizon.
- The heat capacity is negative below the degenerate horizon and positive above it, with an infinite discontinuity at the degenerate horizon, indicating a second-order phase transition.
- The rotating AdS solutions are generated by a global coordinate transformation of the static solution, so they preserve local geometry while changing global properties such as horizon identification.
Reading between the lines
- If the diagonal frame is legitimate, the softened singularity suggests that nonlinear electrodynamics in f(T) gravity can act as a low-energy mechanism for regularizing black hole interiors, though the invariants still diverge and the paper does not prove regularity.
- In the TEGR limit ($a_1\to 1$, $a_2\to 0$), $f_T\to 1$ and the entropy formula reverts to the area law; verifying that the derived expression (43) has this limit would be a consistency test the paper leaves implicit.
- The higher-order charge terms $Q_{14}$ and $Q_{24}$ are not universal features of f(T) plus nonlinear electrodynamics but are inherited from the hand-chosen hyperbolic-secant form of $\aleph$; testing other NLED functions would reveal which singularity-softening effects are robust.
- Because the rotating metric comes from a global coordinate transformation, the thermodynamics of the rotating family may differ from the static one; a direct computation of rotating horizon quantities would settle whether the non-area entropy persists there.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The paper studies d-dimensional static charged AdS black holes in f(T) = a0 + a1 T + a2 T^2 teleparallel gravity coupled to nonlinear electrodynamics. Starting from a diagonal vielbein in cylindrical coordinates, the authors derive a formal solution (31) and then impose constraints N = 0 and 2 a2 c1^2 c2 = a1 P to obtain the simplified metric (33), whose asymptotic expansion contains an effective cosmological term, a mass term, a monopole term Q^2, and higher-order terms Q14 and Q24. The electric field (34) reduces to the Maxwell-field result of Ref. [1] when q1 -> 0. The paper also constructs a rotating counterpart by the coordinate transformation (35), computes invariants near r = 0, and studies entropy, Hawking temperature, heat capacity, and Gibbs free energy, concluding that the entropy is not proportional to the horizon area and can be negative.
Significance. Charged AdS black hole families in quadratic f(T) gravity coupled to nonlinear electrodynamics are of interest for modified-gravity phenomenology, and this paper provides explicit formulas together with a direct reduction to the known Maxwell solution of Ref. [1]. If the central solution is genuine, the q1 parameter gives a tunable nonlinear-electrodynamics correction and the thermodynamic analysis is a concrete extension of earlier work. However, the physical claims are presently conditional: the use of a diagonal vielbein is not justified in a theory that is not local-Lorentz invariant, the singularity comparison is internally inconsistent, and the thermodynamic formulas contain coefficient and topology inconsistencies. These issues affect the central claims of the paper, and the manuscript therefore requires substantial revision.
major comments (4)
- [Section III, Eq. (17)] The entire static solution is derived from the diagonal vielbein (17), but the paper does not demonstrate that this is a 'good tetrad' for the f(T) field equations. The introduction explicitly cites Refs. [59,60] for the statement that diagonal ansatze are unsuitable in spherically symmetric f(T) setups and Ref. [61] for a non-diagonal good tetrad. Equations (21)-(24) report only diagonal components of (13); the off-diagonal components are never shown to vanish for the resulting A(r), g(r), q(r), and \aleph(r). Since f(T) gravity is not local-Lorentz invariant, a different vielbein for the same metric satisfies different equations, so unless the full set of components of (13) is checked, the metric (18) with (33) cannot be claimed to be a solution of the theory. The rotating vielbein (38) inherits the same problem.
- [Section III, paragraph after Eq. (34)] The claim that the central singularity is 'much milder' than in GR/TEGR contradicts the paper's own exponents. For the new solution the invariants are reported to behave as (K, R_{\mu\nu}R^{\mu\nu}) ~ r^{-4(d-2)} and (R, T) ~ r^{-2(d-2)}, while the GR/TEGR Maxwell values are given as r^{-2d} and r^{-d}. At d = 4 these exponents coincide, and for d > 4 one has 4(d-2) > 2d and 2(d-2) > d, so the new singularity is in fact more singular, not milder. The comparison should be redone with the correct d-dimensional GR exponents and the claim corrected or removed.
- [Eqs. (42) and (43)] The entropy calculation has an internal coefficient mismatch. For d = 4, Eq. (42) gives S = \pi r_b^2 f_T, whereas the leading term of Eq. (43) is (\Omega_2/6) r_b^2 a1 = (2\pi/3) r_b^2 a1. In addition, Eq. (43) uses \Omega_{d-2} r_b^{d-2} as the horizon area, but the line element (18) is written in cylindrical coordinates with infinite \xi directions, so the horizon area is not the volume of a unit (d-2)-sphere unless compactification is assumed. The positivity constraint on q1 and the negative-entropy conclusion depend on this approximate formula and need to be re-examined.
- [Section III.A, Eqs. (30)-(33)] The physical content attributed to the nonlinear electrodynamics is largely inherited from the ansatz rather than derived. The dual function \aleph(r) is fixed by hand to the sech form (30), and the constraints N = 0 and 2 a2 c1^2 c2 = a1 P are imposed to obtain the simplified solution; the higher-order terms Q14 and Q24 and the q1 corrections in (34) are therefore direct consequences of this input. The abstract's statement that these higher-order terms have 'their source' in the NLED field should be qualified, since the theory does not single out the chosen \aleph(r).
minor comments (5)
- [Eq. (21)] The angular component is garbled as '... = \zeta_{\xi_{d-n-2}}^{\xi_{d-n-2}} = f_{TT}[...]'; the equation should be typeset cleanly with all indices explicit.
- [Section III.A, text near Eq. (22)] The sentence 'Eq. (22) is a second-order algebraic equation and it gives T = T0 = const' is confusing because the later non-constant-T solution also uses Eq. (22) through the relation (32); the logical structure of the two branches should be clarified.
- [Section IV, Eqs. (35)-(40)] The rotating solution is presented as a coordinate transformation of the static vielbein, but the paper does not state explicitly how the field equations behave under this transformation in f(T) theory; in particular the sentence at the end of Section IV that 'the torsion components are vanishing' is unexplained and should be removed or expanded.
- [Eq. (49)] The heat capacity is written with symbols \alpha and c that are not defined consistently in the surrounding text; the calculation should be checked for notational consistency.
- [Abstract and general text] There are several typographical and grammatical issues, including 'this inanition' in the abstract, which should be corrected in a careful revision.
Circularity Check
No significant circularity; the solution is an honest integration of the explicitly chosen f(T)+NLED field equations, with the main caveat being frame validity rather than circular reasoning.
full rationale
The derivation chain is self-contained in the relevant sense. The only non-derived input is the NLED ansatz for the auxiliary function in Eq. (30), but the paper states it openly as a choice ('let us fix the arbitrary function to have the form') and then solves the stated field equations (21)-(24) for A, g, q. The constraints N=0 and 2 a2 c1^2 c2 = a1 P are algebraic parameter restrictions that make the integrals tractable; they are not fitted to the output metric, and the asymptotic coefficients Q14, Q24 are functions of the already chosen constants. The comparison with the cited paper for q1=0 is a direct limit check, not a load-bearing self-citation. The entropy non-proportionality follows from the adopted external formula S = (1/4) A f_T, Eq. (42), not from a circular redefinition. The serious concern raised in the introduction, that diagonal vielbeins may be bad tetrads in f(T) gravity (Refs. [59,60]), is a mathematical correctness question about whether all components of Eq. (13) vanish for the ansatz (17), not a circularity; it does not reduce the paper's output to its input by construction.
Assumptions & free parameters
free parameters (5)
- a1 and a2 (a0 fixed by N=0) =
free model parameters
- P =
free amplitude in Eq. (30)
- q1 =
free; range restricted only by entropy positivity
- m =
free mass scale in the sech argument
- c1, c2, c3 =
integration constants
assumptions (5)
- domain assumption The vielbein field equations (13)-(15) derived from action (8) are correct and the diagonal vielbein (17) is a legitimate frame for them.
- ad hoc to paper The NLED dual function ℵ(r) is fixed to the sech form of Eq. (30) by hand.
- ad hoc to paper The constraints N=0 (a0=-a1^2/12a2) and 2a2 c1^2 c2 = a1P are imposed so that the simplified solution (33)-(34) exists.
- domain assumption The entropy formula S = A f_T/4 of Eq. (42), taken from ref [85], applies to this solution.
- domain assumption The rotating vielbein (38) satisfies the f(T) field equations because it is obtained by the coordinate transformation (35).
Cite this review
Pith. "Pith review of Rotating and non-rotating AdS black holes in $f({\cal T})$ gravity non-linear electrodynamics." pith.science (2026). https://pith.science/paper/P4POE2EP
@misc{pith2026190807381,
author = {Pith},
title = {Pith review of: Rotating and non-rotating AdS black holes in $f(\cal T)$ gravity non-linear electrodynamics},
year = {2026},
howpublished = {\url{https://pith.science/paper/P4POE2EP}},
note = {Machine review of arXiv:1908.07381}
}
abstract
We derive new exact charged $d$-dimensional black hole solutions for quadratic teleparallel equivalent gravity, $f({\cal T})=a_0+a_1{\cal T}+a_2{\cal T}^2$, where $\cal T$ is the torsion scalar, in the case of non-linear electrodynamics. We give a specific form of electromagnetic function and find out the form of the unknown functions that characterize the vielbeins in presence of the electromagnetic field. It is possible to show that the black holes behave asymptotically as AdS solutions and contain, in addition to the monopole and quadrupole terms, other higher order terms whose source is the non-linear electrodynamics field. We calculate the electromagnetic Maxwell field and show that our d-dimensional black hole solutions coincide with the previous obtained one \cite{2017JHEP...07..136A}. The structure of the solutions show that there is a central singularity that is much mild in comparison with the respective one in General Relativity. Finally, the thermodynamical properties of the solutions are investigated by calculating the entropy, the Hawking temperature, the heat capacity, and other physical quantities. The most important result of thermodynamics is that the entropy is not proportional to the area of the black hole. This inanition points out that we must have a constrain on the quadrupole term to get a positive entropy otherwise we get a negative value.
Figures
Reference graph
Works this paper leans on
-
[1]
D-dimens ional charged Anti-de-Sitter black holes in f (T ) gravity,
A. M. Awad, S. Capozziello, and G. G. L. Nashed, “D-dimens ional charged Anti-de-Sitter black holes in f (T ) gravity,” Journal of High Energy Physics 7, 136 (2017) , arXiv:1706.01773 [gr-qc]. 12
arXiv 2017
-
[61]
Solar system constraints on f (T ) gravity,
L. Iorio and E. N. Saridakis, “Solar system constraints on f (T ) gravity,” mnras 427, 1555–1561 (2012) , arXiv:1203.5781 [gr-qc]
arXiv 2012
-
[2]
Solar System tests in f (T ) gravity,
G. Farrugia, J. L. Said, and M. L. Ruggiero, “Solar System tests in f (T ) gravity,” Phys. Rev. D 93, 104034 (2016) , arXiv:1605.07614 [gr-qc]
arXiv 2016
-
[3]
Observational evidence from sup ernovae for an accelerating universe and a cosmological constant,
A. G. Riess et al. (Supernova Search Team), “Observational evidence from sup ernovae for an accelerating universe and a cosmological constant,” Astron. J. 116, 1009–1038 (1998) , arXiv:astro-ph/9805201 [astro-ph]
arXiv 1998
-
[4]
Measurements of Ωand Λfrom 42 High-Redshift Supernovae,
S. Perlmutter, G. Aldering, G. Goldhaber, R. A. Knop, P . N ugent, P . G. Castro, S. Deustua, S. Fabbro, A. Goobar, D. E. Gr oom, I. M. Hook, A. G. Kim, M. Y . Kim, J. C. Lee, N. J. Nunes, R. Pain, C . R. Pennypacker, R. Quimby, C. Lidman, R. S. Ellis, M. Irwin, R. G. McMahon, P . Ruiz-Lapuente, N. Walton, B. Scha efer, B. J. Boyle, A. V . Filippenko, T. ...
arXiv 1999
-
[5]
(7) The Lagrangian of TEGR theory is constructed from the torsio n scalar given by Eq
and ( 6) the torsion scalar is provided as T := T αµνS αµν. (7) The Lagrangian of TEGR theory is constructed from the torsio n scalar given by Eq. ( 7). Let us now consider f (T ) gravity minimally coupled with non-linear electrodynami cs. Thence, the action of this theory is given by L := 1 2κ ∫ |h| f (T ) dd x + ∫ |h|L(F ) dd x, (8) with |h| = √−g = det...
-
[6]
D. J. Eisenstein et al. (SDSS), “Detection of the Baryon Acoustic Peak in the Large- Scale Correlation Function of SDSS Luminous Red Galaxies,” Astrophys. J. 633, 560–574 (2005) , arXiv:astro-ph/0501171 [astro-ph]
arXiv 2005
-
[7]
Model-Independent Distance Measurements from Gamma-Ray Bursts and Constraints on Dark Energy
Y . Wang, “Model-independent distance measurements fro m gamma-ray bursts and constraints on dark energy,” Phys. Rev. D 78, 123532 (2008) , arXiv:0809.0657
work page Pith review arXiv 2008
Show all 103 references
-
[8]
The cosmological constant an d dark energy,
P . J. Peebles and B. Ratra, “The cosmological constant an d dark energy,” Reviews of Modern Physics 75, 559–606 (2003) , astro-ph/0207347
2003 arXiv
-
[9]
Nine-year Wilkinson Microwave Anisotropy Probe (WMAP) Ob servations: Cosmological Parameter Results,
G. Hinshaw, D. Larson, E. Komatsu, D. N. Spergel, C. L. Ben nett, J. Dunkley, M. R. Nolta, M. Halpern, R. S. Hill, N. Odega rd, L. Page, K. M. Smith, J. L. Weiland, B. Gold, N. Jarosik, A. Kogut, M. Li mon, S. S. Meyer, G. S. Tucker, E. Wollack, and E. L. Wright, “Nine-year Wi...
2013 arXiv
-
[10]
Was Einstein Right? A Centenary Assessment ,
C. M. Will, “Was Einstein Right? A Centenary Assessment ,” arXiv e-prints (2014), arXiv:1409.7871 [gr-qc]
2014 arXiv
-
[11]
Extended theorie s of gravity and their cosmological and astrophysical appli cations,
S. Capozziello and M. Francaviglia, “Extended theorie s of gravity and their cosmological and astrophysical appli cations,” General Relativity and Gravitation 40, 357–420 (2008) , arXiv:0706.1146
2008 arXiv
-
[12]
Tel eparallel Gravity: An Overview,
V . C. de Andrade, L. C. T. Guillen, and J. G. Pereira, “Tel eparallel Gravity: An Overview,” arXiv General Relativity and Quantum Cosmology e-prints (2000), gr-qc/0011087
2000 arXiv
-
[13]
Binney and S
J. Binney and S. Tremaine, Princeton, NJ, Princeton University Press, 1987, 747 p. (1987)
1987
-
[14]
Selected Top ics in Teleparallel Gravity,
R. Aldrovandi, J. G. Pereira, and K. H. Vu, “Selected Top ics in Teleparallel Gravity,” arXiv General Relativity and Quantum Cosmology e-prints (2003), gr-qc/0312008
2003 arXiv
-
[15]
It is worth noticing that the electric field of linear electrodyna mics is obtained as E = Ftr = ℵPPtr
has a non-vanishing trace unlike the stress-energy tensor coincides with the Maxwell one. It is worth noticing that the electric field of linear electrodyna mics is obtained as E = Ftr = ℵPPtr. (16) In this context, black hole solutions can be found. III. ANTI-DE-SITTER BLACK H...
-
[16]
Translation of Einstein’s Att empt of a Unified Field Theory with Teleparallelism,
A. Unzicker and T. Case, “Translation of Einstein’s Att empt of a Unified Field Theory with Teleparallelism,” ArXiv P hysics e-prints (2005), physics/0503046
2005 arXiv
-
[17]
into the torsion scalar in (7), we get T = (d − 2) A′g r + (d − 2)(d − 3) Ag r2 , (19) where A′(r) ≡ dA(r) dr and g′(r) ≡ dg(r) dr . Finally, since the f (T ) power law gravity seems the model with the best agreement wi th observational data [66– 68], we will focus on the choi...
-
[18]
Charged and Non-Charged Black Hole Solu tions in Mimetic Gravitational Theory,
Gamal Nashed, “Charged and Non-Charged Black Hole Solu tions in Mimetic Gravitational Theory,” Symmetry 10, 559 (2018)
2018
-
[19]
The teleparallel equivalent of general re lativity,
J. W. Maluf, “The teleparallel equivalent of general re lativity,” Annalen der Physik 525, 339–357 (2013) , arXiv:1303.3897 [gr-qc]
2013 arXiv
-
[20]
Born-Infeld gravity in Weit zenb¨ ock spacetime,
R. Ferraro and F. Fiorini, “Born-Infeld gravity in Weit zenb¨ ock spacetime,”Phys. Rev. D 78, 124019 (2008) , arXiv:0812.1981 [gr-qc]
2008 arXiv
-
[21]
Stability of the vacuum nonsingula r black hole,
Gamal G. L. Nashed, “Stability of the vacuum nonsingula r black hole,” Chaos Solitons Fractals 15, 841 (2003) , arXiv:gr-qc/0301008 [gr-qc]
2003 arXiv
-
[22]
Gravitational Loren tz force and the description of the gravitational interacti on,
V . C. de Andrade and J. G. Pereira, “Gravitational Loren tz force and the description of the gravitational interacti on,” Phys. Rev. D 56, 4689–4695 (1997) , gr-qc/9703059
1997 arXiv
-
[23]
Black holes, dark wormholes, and s olitons in f (T ) gravities,
Z.-F. Mai and H. L¨ u, “Black holes, dark wormholes, and s olitons in f (T ) gravities,” Phys. Rev. D 95, 124024 (2017) , arXiv:1704.05919 [hep-th]
2017 arXiv
-
[24]
Analytic rotating blac k hole solutions in N-dimensional f (T ) gravity,
G. G. L. Nashed and W. El Hanafy, “Analytic rotating blac k hole solutions in N-dimensional f (T ) gravity,” Eur. Phys. J. C77, 90 (2017) , arXiv:1612.05106 [gr-qc]
2017 arXiv
-
[25]
a Type of Born-Infeld Regula r Gravity and its Cosmological Consequences,
F. Fiorini and R. Ferraro, “a Type of Born-Infeld Regula r Gravity and its Cosmological Consequences,” International Journal of Modern Physics A 24, 1686–1689 (2009) , arXiv:0904.1767 [gr-qc]
2009 arXiv
-
[26]
Accelerati ng f(T) gravity models constrained by recent cosmological d ata,
V . F. Cardone, N. Radicella, and S. Camera, “Accelerati ng f(T) gravity models constrained by recent cosmological d ata,” Phys. Rev. D 85, 124007 (2012) , arXiv:1204.5294
2012 arXiv
-
[27]
Accelerating universe from F(T ) gravity,
R. Myrzakulov, “Accelerating universe from F(T ) gravity,” European Physical Journal C 71, 1752 (2011) , arXiv:1006.1120 [gr-qc]
2011 arXiv
-
[28]
f (T ) modified teleparallel gravity as an alternative for hologr aphic and new agegraphic dark energy models,
K. Karami and A. Abdolmaleki, “ f (T ) modified teleparallel gravity as an alternative for hologr aphic and new agegraphic dark energy models,” Research in Astronomy and Astrophysics 13, 757-771 (2013) , arXiv:1009.2459 [gr-qc]
2013 arXiv
-
[29]
New types of f( T) gravity,
R.-J. Yang, “New types of f( T) gravity,” European Physical Journal C 71, 1797 (2011) , arXiv:1007.3571 [gr-qc]
2011 arXiv
-
[30]
Observational information for f (T ) theories and dark torsion,
G. R. Bengochea, “Observational information for f (T ) theories and dark torsion,” Physics Letters B 695, 405–411 (2011) , arXiv:1008.3188 [astro-ph.CO]
2011 arXiv
-
[31]
Generic feature of future crossing of phantom divide in viable f (R) gravity models,
K. Bamba, C.-Q. Geng, and C.-C. Lee, “Generic feature of future crossing of phantom divide in viable f (R) gravity models,” jcap 11, 001 (2010) , arXiv:1007.0482
2010 arXiv
-
[32]
Conform al symmetry and accelerating cosmology in teleparallel gra vity,
K. Bamba, S. D. Odintsov, and D. S´ aez-G´ omez, “Conform al symmetry and accelerating cosmology in teleparallel gra vity,” Phys. Rev. D 88, 084042 (2013) , arXiv:1308.5789 [gr-qc]
2013 arXiv
-
[33]
f (T ) gravity mimicking dynamical dark energy. Background and p erturbation analysis,
J. B. Dent, S. Dutta, and E. N. Saridakis, “ f (T ) gravity mimicking dynamical dark energy. Background and p erturbation analysis,” jcap 1, 009 (2011) , arXiv:1010.2215 [astro-ph.CO]
2011 arXiv
-
[34]
Matter bounce cosmology with the f (T ) gravity,
Y .-F. Cai, S.-H. Chen, J. B. Dent, S. Dutta, and E. N. Sari dakis, “Matter bounce cosmology with the f (T ) gravity,” Classical and Quantum Gravity 28, 215011 (2011) , arXiv:1104.4349 [astro-ph.CO]
2011 arXiv
-
[35]
This feature comes out from the fact that it mixes compact and noncompact coordinates
does not alter local spacetime properties, however it chan ges global properties (see [69]). This feature comes out from the fact that it mixes compact and noncompact coordinates. As a consequence, vielbeins (17) and ( 38) can be locally transformed into each other but this pr...
-
[36]
Cosmography in f (T ) gravity,
S. Capozziello, V . F. Cardone, H. Farajollahi, and A. Ra vanpak, “Cosmography in f (T ) gravity,” Phys. Rev. D 84, 043527 (2011) , arXiv:1108.2789 [astro-ph.CO]
2011 arXiv
-
[37]
Detectabil ity of torsion gravity via galaxy clustering and cosmic shea r measurements,
S. Camera, V . F. Cardone, and N. Radicella, “Detectabil ity of torsion gravity via galaxy clustering and cosmic shea r measurements,” Phys. Rev. D 89, 083520 (2014) , arXiv:1311.1004
2014 arXiv
-
[38]
FRW in quadratic form of f (T ) gravitational theories,
G. L. Nashed, “FRW in quadratic form of f (T ) gravitational theories,” Gen. Rel. Grav. 47, 75 (2015) , arXiv:1506.08695 [gr-qc]. 13
2015 arXiv
-
[39]
Spherically symmetric charged-dS sol ution in f (T ) gravity theories,
G. G. L. Nashed, “Spherically symmetric charged-dS sol ution in f (T ) gravity theories,” Phys. Rev. D 88, 104034 (2013) , arXiv:1311.3131 [gr-qc]
2013 arXiv
-
[40]
Energy of Ge neral Spherically Symmetric Solution in the Tetrad Theory o f Gravitation,
T. Shirafuji, G. G. Nashed, and K. Hayashi, “Energy of Ge neral Spherically Symmetric Solution in the Tetrad Theory o f Gravitation,” Progress of Theoretical Physics 95, 665–678 (1996) , gr-qc/9601044
1996 arXiv
-
[41]
Static solutions with spherical symmetry in f (T ) theories,
T. Wang, “Static solutions with spherical symmetry in f (T ) theories,” Phys. Rev. D 84, 024042 (2011) , arXiv:1102.4410 [gr-qc]
2011 arXiv
-
[42]
Spherically symmetric stat ic spacetimes in vacuum f (T ) gravity,
R. Ferraro and F. Fiorini, “Spherically symmetric stat ic spacetimes in vacuum f (T ) gravity,” Phys. Rev. D 84, 083518 (2011) , arXiv:1109.4209 [gr-qc]
2011 arXiv
-
[43]
Charg ed rotating black holes coupled with nonlinear electrodyna mics Maxwell field in the mimetic gravity,
G. G. L. Nashed, W. El Hanafy, and Kazuharu Bamba, “Charg ed rotating black holes coupled with nonlinear electrodyna mics Maxwell field in the mimetic gravity,” JCAP 1901, 058 (2019) , arXiv:1809.02289 [gr-qc]
2019 arXiv
-
[44]
Constraini ng f (T ) gravity in the solar system,
L. Iorio, N. Radicella, and M. L. Ruggiero, “Constraini ng f (T ) gravity in the solar system,” Journal of Cosmology and Astroparticle Physics 2015, 021–021 (2015)
2015
-
[45]
Charged Anti-de Sit ter BTZ black holes in Maxwell- f (T ) gravity,
G. G. L. Nashed and S. Capozziello, “Charged Anti-de Sit ter BTZ black holes in Maxwell- f (T ) gravity,” Int. J. Mod. Phys. A33, 1850076 (2018) , arXiv:1710.06620 [gr-qc]
2018 arXiv
-
[46]
Phase portraits of general f (T ) cosmology,
A. Awad, W. El Hanafy, G.G.L. Nashed, and Emmanuel N. Sar idakis, “Phase portraits of general f (T ) cosmology,” Journal of Cosmology and Astroparticle Physics 2018, 052–052 (2018)
2018
-
[47]
Circularly symmetric solutions in three-dimensional telepara llel, f (T ) and Maxwell- f (T ) gravity,
P . A. Gonz´ alez, E. N. Saridakis, and Y . V´ asquez, “Circularly symmetric solutions in three-dimensional telepara llel, f (T ) and Maxwell- f (T ) gravity,” Journal of High Energy Physics 7, 53 (2012) , arXiv:1110.4024 [gr-qc]
2012 arXiv
-
[48]
Rotating ch arged ads solutions in quadratic f (T ) gravity,
A. M. Awad, G. G. L. Nashed, and W. El Hanafy, “Rotating ch arged ads solutions in quadratic f (T ) gravity,” The European Physical Journal C 79, 668 (2019)
2019
-
[49]
Generic phase portrait analysis of finite-time singularities and generalized tele parallel gravity,
W. El Hanafy and G.G.L. Nashed, “Generic phase portrait analysis of finite-time singularities and generalized tele parallel gravity,” Chinese Physics C 41, 125103 (2017)
2017
-
[50]
Constraining the Schwarzschild de Sitter solution in m odels of modified gravity,
L. Iorio, M. L. Ruggiero, N. Radicella, and E. N. Saridak is, “Constraining the Schwarzschild de Sitter solution in m odels of modified gravity,” Physics of the Dark Universe 13, 111 – 120 (2016)
2016
-
[51]
Bo rn-infeld and charged black holes with non-linear source in f (T ) gravity,
E. L. B. Junior, M. E. Rodrigues, and M. J.S. Houndjo, “Bo rn-infeld and charged black holes with non-linear source in f (T ) gravity,” Journal of Cosmology and Astroparticle Physics 2015, 037–037 (2015)
2015
-
[52]
f (T, T ) gravity and cosmology,
T. Harko, F. S. N. Lobo, G. Otalora, and E. N. Saridakis, “ f (T, T ) gravity and cosmology,” Journal of Cosmology and Astroparticle Physics 2014, 021–021 (2014)
2014
-
[53]
Exact charged black-hole solutions in D-dimensi onal f (T ) gravity: torsion vs curvature analysis,
S. Capozziello, P . A. Gonzalez, E.l N. Saridakis, and Y . V asquez, “Exact charged black-hole solutions in D-dimensi onal f (T ) gravity: torsion vs curvature analysis,” JHEP 02, 039 (2013) , arXiv:1210.1098 [hep-th]
2013 arXiv
-
[54]
Charged black holes in generalized telepa rallel gravity,
M. E. Rodrigues, M. J. S. Houndjo, J. Tossa, D. Momeni, an d R. Myrzakulov, “Charged black holes in generalized telepa rallel gravity,” jcap 11, 024 (2013) , arXiv:1306.2280 [gr-qc]
2013 arXiv
-
[55]
A special exact spherically symmetric solution in f (T ) gravity theories,
G. G. L. Nashed, “A special exact spherically symmetric solution in f (T ) gravity theories,” General Relativity and Gravitation 45, 1887–1899 (2013) , arXiv:1502.05219 [gr-qc]
2013 arXiv
-
[56]
Stationary axisymmetric solutions an d their energy contents in teleparallel equivalent of Einst ein theory,
G. G. L. Nashed, “Stationary axisymmetric solutions an d their energy contents in teleparallel equivalent of Einst ein theory,” apss 330, 173–181 (2010) , arXiv:1503.01379 [gr-qc]
2010 arXiv
-
[57]
Re gular black holes in f (T ) gravity through a nonlinear electrodynamics source,
E. L. B. Junior, M. E. Rodrigues, and M. J. S. Houndjo, “Re gular black holes in f (T ) gravity through a nonlinear electrodynamics source,” jcap 10, 060 (2015) , arXiv:1503.07857 [gr-qc]
2015 arXiv
-
[58]
Kerr geomet ry in gravity,
C. Bejarano, R. Ferraro, and M. J. Guzm´ an, “Kerr geomet ry in gravity,” European Physical Journal C 75, 77 (2015) , arXiv:1412.0641 [gr-qc]
2015 arXiv
-
[59]
Spherically Symmetric Solutions on a No n-Trivial Frame in f (T ) Theories of Gravity,
G. L. N. Gamal, “Spherically Symmetric Solutions on a No n-Trivial Frame in f (T ) Theories of Gravity,” Chinese Physics Letters 29, 050402 (2012) , arXiv:1111.0003 [physics.gen-ph]
2012 arXiv
-
[60]
Schwarzschild solution in extended te leparallel gravity,
G. G. L. Nashed, “Schwarzschild solution in extended te leparallel gravity,” EPL (Europhysics Letters) 105, 10001 (2014) , arXiv:1501.00974 [gr-qc]
2014 arXiv
-
[62]
f (T ) gravity: effects on astronomical observations and Solar s ystem experiments and upper bounds,
Y . Xie and X.-M. Deng, “ f (T ) gravity: effects on astronomical observations and Solar s ystem experiments and upper bounds,” mnras 433, 3584–3589 (2013) , arXiv:1312.4103 [gr-qc]
2013 arXiv
-
[63]
Good and bad tetrads in f (T ) gravity,
N. Tamanini and C. G. B¨ ohmer, “Good and bad tetrads in f (T ) gravity,” Phys. Rev. D 86, 044009 (2012) , arXiv:1204.4593 [gr-qc]
2012 arXiv
-
[64]
Weak-field sphericall y symmetric solutions in f (T ) gravity,
M. L. Ruggiero and N. Radicella, “Weak-field sphericall y symmetric solutions in f (T ) gravity,” Phys. Rev. D 91, 104014 (2015) , arXiv:1501.02198 [gr-qc]
2015 arXiv
-
[65]
Constraini ng f (T ) gravity in the Solar System,
L. Iorio, N. Radicella, and M. L. Ruggiero, “Constraini ng f (T ) gravity in the Solar System,” jcap 8, 021 (2015), arXiv:1505.06996 [gr-qc]
2015 arXiv
-
[66]
Rotating AdS black h oles in Maxwell- f (T ) gravity,
G. G. L. Nashed and E. N. Saridakis, “Rotating AdS black h oles in Maxwell- f (T ) gravity,” Class. Quant. Grav. 36, 135005 (2019) , arXiv:1811.03658 [gr-qc]
2019 arXiv
-
[67]
Pleba´ nski,Lectures on non-linear electrodynamics: an extended versi on of lectures given at the Niels Bohr Institute and NORDITA, Copenhagen, in October 1968 (NORDITA, 1970)
J. Pleba´ nski,Lectures on non-linear electrodynamics: an extended versi on of lectures given at the Niels Bohr Institute and NORDITA, Copenhagen, in October 1968 (NORDITA, 1970)
1968
-
[68]
New regular black hole solution from no nlinear electrodynamics,
E. Ayon-Beato, “New regular black hole solution from no nlinear electrodynamics,” Physics Letters B 464, 25–29 (1999) , hep-th/9911174
1999 arXiv
-
[69]
Duality rotations and type D solutions to Einstein equations with n onlinear electromagnetic sources,
H. Salazar I., A. Garc´ ıa D., and J. Pleba´ nski, “Duality rotations and type D solutions to Einstein equations with n onlinear electromagnetic sources,” Journal of Mathematical Physics 28, 2171–2181 (1987)
1987
-
[70]
Viable f (T ) models are practically indistinguishable from ΛCDM,
S. Nesseris, S. Basilakos, E. N. Saridakis, and L. Periv olaropoulos, “Viable f (T ) models are practically indistinguishable from ΛCDM,” Phys. Rev. D 88, 103010 (2013) , arXiv:1308.6142 [astro-ph.CO]
2013 arXiv
-
[71]
New observatio nal constraints on f (T ) gravity from cosmic chronometers,
R. C. Nunes, S. Pan, and E. N. Saridakis, “New observatio nal constraints on f (T ) gravity from cosmic chronometers,” jcap 8, 011 (2016), arXiv:1606.04359 [gr-qc]. 14
2016 arXiv
-
[72]
Updated constraints on f (T ) models using direct and indirect measurements of the Hubble parameter,
S. Basilakos, S. Nesseris, F. K. Anagnostopoulos, and E . N. Saridakis, “Updated constraints on f (T ) models using direct and indirect measurements of the Hubble parameter,” jcap 8, 008 (2018), arXiv:1803.09278
2018 arXiv
-
[73]
Cylindrical black hole in general relat ivity,
J. P . S. Lemos, “Cylindrical black hole in general relat ivity,” Phys. Lett. , 46–51 (1995) , arXiv:gr-qc/9404041 [gr-qc]
1995 arXiv
-
[74]
Higher dimensional charged rotating sol utions in (A)dS space-times,
Adel M. Awad, “Higher dimensional charged rotating sol utions in (A)dS space-times,” Class. Quant. Grav. 20, 2827–2834 (2003) , arXiv:hep-th/0209238 [hep-th]
2003 arXiv
-
[75]
The Action of instantons with nut charge,
C. J. Hunter, “The Action of instantons with nut charge, ” Phys. Rev. , 024009 (1999), arXiv:gr-qc/9807010 [gr-qc]
1999 arXiv
-
[76]
Nut charge, anti-de Sitter space and entropy,
S. W. Hawking, C. J. Hunter, and Don N. Page, “Nut charge, anti-de Sitter space and entropy,” Phys. Rev. , 044033 (1999), arXiv:hep-th/9809035 [hep-th]
1999 arXiv
-
[77]
Black holes and the second law,
J. D. Bekenstein, “Black holes and the second law,” Lett. Nuovo Cim. 4, 737–740 (1972)
1972
-
[78]
Black holes and entropy,
Jacob D. Bekenstein, “Black holes and entropy,” Phys. Rev. , 2333–2346 (1973)
1973
-
[79]
Cosmological Event Hor izons, Thermodynamics, and Particle Creation,
G. W. Gibbons and S. W. Hawking, “Cosmological Event Hor izons, Thermodynamics, and Particle Creation,” Phys. Rev. , 2738–2751 (1977)
1977
-
[80]
De Sitter-Schwarzschild Black Hole:. i ts Particlelike Core and Thermodynamical Properties,
I. Dymnikova, “De Sitter-Schwarzschild Black Hole:. i ts Particlelike Core and Thermodynamical Properties,” International Journal of Modern Physics D 5, 529–540 (1996)
1996
-
[81]
Cosmological term as a source of mass,
I. Dymnikova, “Cosmological term as a source of mass,” Class. Quant. Grav. 19, 725–740 (2002) , arXiv:gr-qc/0112052 [gr-qc]
2002 arXiv
-
[82]
Generic Features of Thermodynamics of H orizons in Regular Spherical Space-Times of the Kerr-Schil d Class,
I. Dymnikova, “Generic Features of Thermodynamics of H orizons in Regular Spherical Space-Times of the Kerr-Schil d Class,” Universe 4, 63 (2018)
2018
-
[83]
Thermodynamics of th e Schwarzschild and the ReissnerNordstrm black holes with q uintessence,
K. Ghaderi and B. Malakolkalami, “Thermodynamics of th e Schwarzschild and the ReissnerNordstrm black holes with q uintessence,” Nucl. Phys. , 10–18 (2016)
2016
-
[84]
Formation and evaporation of regular bl ack holes,
S. A. Hayward, “Formation and evaporation of regular bl ack holes,” Phys. Rev. Lett. 96, 031103 (2006) , arXiv:gr-qc/0506126 [gr-qc]
2006 arXiv
-
[85]
Anomaly and Hawking radiat ion from regular black holes,
W. Kim, H. Shin, and M. Y oon, “Anomaly and Hawking radiat ion from regular black holes,” J. Korean Phys. Soc. 53, 1791–1796 (2008) , arXiv:0803.3849 [gr-qc]
2008 arXiv
-
[86]
Thermodynam ics of regular black hole,
Y . Soo Myung, Y .-Wan Kim, and Y .-Jai Park, “Thermodynam ics of regular black hole,” Gen. Rel. Grav. 41, 1051–1067 (2009) , arXiv:0708.3145 [gr-qc]
2009 arXiv
-
[87]
Noncommu tative geometry inspired Schwarzschild black hole,
P . Nicolini, A. Smailagic, and E. Spallucci, “Noncommu tative geometry inspired Schwarzschild black hole,” Phys. Lett. , 547–551 (2006) , arXiv:gr-qc/0510112 [gr-qc]
2006 arXiv
-
[88]
Thermodynamics of a Bardee n black hole in noncommutative space,
M. Sharif and Wajiha Javed, “Thermodynamics of a Bardee n black hole in noncommutative space,” Can. J. Phys. 89, 1027–1033 (2011) , arXiv:1109.6627 [gr-qc]
2011 arXiv
-
[89]
Violation of the first law of black hole thermodynamics in f (T ) gravity,
R.-X. Miao, M. Li, and Y .-G. Miao, “Violation of the first law of black hole thermodynamics in f (T ) gravity,” jcap 11, 033 (2011) , arXiv:1107.0515 [hep-th]
2011 arXiv
-
[90]
Black holes thermodynamics to all order in the Planck length in extra dimensions,
K. Nouicer, “Black holes thermodynamics to all order in the Planck length in extra dimensions,” Class. Quant. Grav. 24, 5917–5934 (2007) , [Erratum: Class. Quant. Grav.24,6435(2007)], arXiv:0706.2749 [gr-qc]
2007 arXiv
-
[91]
Thermodynamics of regul ar cosmological black holes with the de sitter interior,
I. Dymnikova and M. Korpusik, “Thermodynamics of regul ar cosmological black holes with the de sitter interior,” Entropy 13, 1967–1991 (2011)
2011
-
[92]
Charged AdS black holes and catastrophic holography,
A. Chamblin, R. Emparan, C. V . Johnson, and R. C. Myers, “ Charged AdS black holes and catastrophic holography,” Phys. Rev. , 064018 (1999), arXiv:hep-th/9902170 [hep-th]
1999 arXiv
-
[93]
Particle Creation by Black Holes,
S. W. Hawking, “Particle Creation by Black Holes,” Euclidean quantum gravity , Commun. Math. Phys. 43, 199–220 (1975) , [,167(1975)]
1975
-
[94]
Thermodynamics of Black Holes,
P . C. W. Davies, “Thermodynamics of Black Holes,” Proc. Roy. Soc. Lond. , 499–521 (1977)
1977
-
[95]
Thermodynamics of Black H oles in anti-De Sitter Space,
S. W. Hawking and Don N. Page, “Thermodynamics of Black H oles in anti-De Sitter Space,” Commun. Math. Phys. 87, 577 (1983)
1983
-
[96]
Phase transition of quantum-correct ed Schwarzschild black hole,
W. Kim and Y . Kim, “Phase transition of quantum-correct ed Schwarzschild black hole,” Physics Letters B 718, 687–691 (2012) , arXiv:1207.5318 [gr-qc]
2012 arXiv
-
[97]
Thermodynamics of Rotating Black Holes and Black Rin gs: Phase Transitions and Thermodynamic V olume,
N. Altamirano, D. Kubizˇ n´ ak, R. Mann, and Z. Sherkatgh anad, “Thermodynamics of Rotating Black Holes and Black Rin gs: Phase Transitions and Thermodynamic V olume,” Galaxies 2, 89–159 (2014) , arXiv:1401.2586 [hep-th]
2014 arXiv
-
[98]
Black hole th ermodynamics and negative entropy in de sitter and anti-de s itter einstein-gauss- bonnet gravity,
M. Cvetiˇ c, S. Nojiri, and S. D. Odintsov, “Black hole th ermodynamics and negative entropy in de sitter and anti-de s itter einstein-gauss- bonnet gravity,” Nuclear Physics B 628, 295–330 (2002) , hep-th/0112045
2002 arXiv
-
[99]
Holographic E ntropy and Brane FRW Dynamics from AdS Black Hole in d5 Higher Derivative Gravity,
S. Nojiri, S. D. Odintsov, and S. Ogushi, “Holographic E ntropy and Brane FRW Dynamics from AdS Black Hole in d5 Higher Derivative Gravity,” International Journal of Modern Physics A 16, 5085–5099 (2001) , hep-th/0105117
2001 arXiv
-
[100]
(Anti-)de Sitter black ho les in higher derivative gravity and dual conformal field the ories,
S. Nojiri and S. D. Odintsov, “(Anti-)de Sitter black ho les in higher derivative gravity and dual conformal field the ories,” Phys. Rev. D 66, 044012 (2002) , hep-th/0204112
2002 arXiv
-
[101]
Regular multihorizon bla ck holes in modified gravity with nonlinear electrodynamics ,
S. Nojiri and S. D. Odintsov, “Regular multihorizon bla ck holes in modified gravity with nonlinear electrodynamics ,” Phys. Rev. D 96, 104008 (2017) , arXiv:1708.05226 [hep-th]
2017 arXiv
-
[102]
On Gauss Bonnet bl ack hole entropy,
T. Clunan, S. F. Ross, and D. J. Smith, “On Gauss Bonnet bl ack hole entropy,” Classical and Quantum Gravity 21, 3447–3458 (2004) , gr-qc/0402044
2004 arXiv
-
[103]
Graviton corr elator and metric perturbations in a de Sitter brane-world,
S. Nojiri, S. D. Odintsov, and S. Ogushi, “Graviton corr elator and metric perturbations in a de Sitter brane-world, ” Phys. Rev. D 66, 023522 (2002) , hep-th/0202098
2002 arXiv
Reviewed August 14, 2026 · model on record in the stance chip above.
Discussion (0). Continue with ORCID to comment.