Gravitational baryogenesis models comparison in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si11.svg"><mml:mrow><mml:mi>f</mml:mi><mml:mo>(</mml:mo><mml:mi>R</mml:mi><mml:mo>)</mml:mo></mml:mrow></mml:math> gravity

Agrawal, Aniket; Tripathy, S. K.; Mishra, B.

doi:10.1016/j.cjph.2021.03.004

Cited by 11 publications

(2 citation statements)

References 47 publications

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“…The exact solutions of static spherically symmetric space-times in ( ) f R gravity coupled to nonlinear electrodynamics have been studied by Hollenstein and Lobo [38]. ( ) f R gravity has been studied by a number of researchers in various cosmological contexts [39][40][41][42][43][44][45][46][47][48][49][50][51][52][53].…”

Section: Introductionmentioning

confidence: 99%

Renyi Holographic Dark Energy Model in f(R) Gravity with Hubble's IR Cut-Off

Wankhade,

Shaikh,

Khan

2023

East Eur. J. Phys.

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In the present study, a homogeneous and anisotropic LRS Bianchi type-I universe model is considered with an interacting dark matter and Renyi holographic dark energy model (RHDE) in f(R) gravity. The deceleration parameter (DP) shows a signature flipping for a universe which was decelerating in past and accelerating at present epoch. Therefore, the DP is a most physically justified parameter to analyze the solution of cosmological model. In order to find an exact solution of the field equations of the model, the shear scalar is considered to be proportional to the expansion scalar. We have considered f(R) = b Rn, the depiction model of f(R) which is the function of Ricci scalar R. The physical and geometrical characteristics of the universe model have been studied.

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Section: Introductionmentioning

confidence: 99%

Renyi Holographic Dark Energy Model in f(R) Gravity with Hubble's IR Cut-Off

Wankhade,

Shaikh,

Khan

2023

East Eur. J. Phys.

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“…However, the predicted BAU in the SMC is vanishing. Although several potential explanations have been hitherto suggested [45][46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62] (see also models with GUT interactions [63][64][65][66]), none of them offers a full and well-accepted solution [67].…”

Section: Introductionmentioning

confidence: 99%

Baryon asymmetry from Barrow entropy: theoretical predictions and observational constraints

Luciano,

Saridakis

2022

Preprint

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We investigate the generation of baryon asymmetry from the corrections brought about in the Friedman equations due to Barrow entropy. In particular, by applying the gravity-thermodynamics conjecture one obtains extra terms in the Friedmann equations that change the Hubble function evolution during the radiation-dominated epoch. Hence, even in the case of standard coupling between the Ricci scalar and baryon current they can lead to a non-zero baryon asymmetry. In order to match observations we find that the Barrow exponent should lie in the interval 0.005 ∆ 0.008, which corresponds to a slight deviation from the standard Bekenstein-Hawking entropy. The upper bound is tighter than the one of other observational constraints, however the interesting feature is that in the present analysis we obtain a non-zero lower bound. Nevertheless this lower bound would disappear if the baryon asymmetry in Barrow-modified cosmology is generated by other mechanisms, not related to the Barrow modification.

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Examining the physical viability of the f(R) gravity via observational constraints

Shaikh

2023

Chinese Journal of Physics

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Gravitational baryogenesis models comparison in f(R) gravity

Cited by 11 publications

References 47 publications

Renyi Holographic Dark Energy Model in f(R) Gravity with Hubble's IR Cut-Off

Renyi Holographic Dark Energy Model in f(R) Gravity with Hubble's IR Cut-Off

Baryon asymmetry from Barrow entropy: theoretical predictions and observational constraints

Examining the physical viability of the f(R) gravity via observational constraints

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