The generalized second law of thermodynamics in the accelerating universe

Zhou, J.; Wang, Bin; Gong, Yungui; Abdalla, Élcio

doi:10.1016/j.physletb.2007.06.067

Cited by 118 publications

(103 citation statements)

References 24 publications

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“…The generalized second law of thermodynamics is a universal principle governing the universe. Recently the generalized second law of thermodynamics in the accelerating universe enveloped by the apparent horizon has been studied extensively in [37,38,39]. For other gravity theories, the generalized second law has also been studied in [40,41].…”

Section: Introductionmentioning

confidence: 99%

Generalized Second Law of Thermodynamics in Warped DGP Braneworld

Sheykhi

Wang

2010

Mod. Phys. Lett. A

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We investigate the validity of the generalized second law of thermodynamics on the (n − 1)-dimensional brane embedded in the (n + 1)-dimensional bulk. We examine the evolution of the apparent horizon entropy extracted through relation between gravitational equation and the first law of thermodynamics together with the matter field entropy inside the apparent horizon. We find that the apparent horizon entropy extracted through connection between gravity and the first law of thermodynamics satisfies the generalized second law of thermodynamics. This result holds regardless of whether there is the intrinsic curvature term on the brane or a cosmological constant in the bulk. The observed satisfaction of the generalized second law provides further support on the thermodynamical interpretation of gravity based on the profound connection between gravity and thermodynamics.

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Section: Introductionmentioning

confidence: 99%

Generalized Second Law of Thermodynamics in Warped DGP Braneworld

Sheykhi

Wang

2010

Mod. Phys. Lett. A

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“…It occurs not only in Einstein's gravity, but in other scenarios such as braneworld models [50][51][52][53], Horava-Lifshitz gravity [54], Lovelock gravity [47,55] and f (R) gravity [56]. Moreover, it has been shown that the obedience to the generalized second law of thermodynamics is fulfilled in the scenario of an accelerating expanding universe when one identifies the cosmological holographic boundary as the universe apparent horizon [57][58][59]. On the base of such facts, it can be argued that the apparent horizon must be considered as the physical horizon in dealing with thermodynamics issues, in the context of a universe with any curvature.…”

Section: Friedmann Equations From Thermodynamicsmentioning

confidence: 99%

On the holographic basis of loop quantum cosmology

Silva

2018

Eur. Phys. J. C

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“…According to the recent type Ia Supernovae data, it is suggested that in the accelerating universe the enveloping surface should be the apparent horizon rather than the event one from the thermodynamic point of view [37]. In flat FRW spacetime, the radius at the apparent horizon is given byr A = 1/H [38], and the dynamical apparent horizon is determined by the relation…”

Section: First Law Of Thermodynamicsmentioning

confidence: 99%

Thermodynamics in Little Rip cosmology in the framework of a type of f(R, T) gravity

et al. 2014

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Cosmological reconstruction of Little Rip model in f (R, T ) gravity is investigated, where R is the curvature scalar and T the trace of the energy momentum tensor. The model perfectly reproduces the present stage of the universe, characterized by the ΛCDM model, without singularity at future finite-time (without the Big Rip). The input parameters are determined according to Supernovae Cosmology data and perfectly fit with the WMAP around the Little Rip. Moreover, the thermodynamics is considered in this Little Rip cosmology and it is illustrated that the second law of thermodynamics is always satisfied around the Little Rip universe for the temperature inside the horizon being the same as that of the apparent horizon. Moreover, we show the existence of a stable fixed point in the Little Rip universe which confirms that this is actually a late-time attractor in the phantom-dominated universe. The linear perturbation analysis is performed around the critical points, showing that the Little Rip model obtained is stable.

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The generalized second law of thermodynamics in the accelerating universe

Cited by 118 publications

References 24 publications

Generalized Second Law of Thermodynamics in Warped DGP Braneworld

Generalized Second Law of Thermodynamics in Warped DGP Braneworld

On the holographic basis of loop quantum cosmology

Thermodynamics in Little Rip cosmology in the framework of a type of f(R, T) gravity

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