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相关论文: Thermodynamics of cosmological horizons in $f(T)$ …

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We investigate thermodynamics of the apparent horizon in $f(R)$ gravity in the Palatini formalism with non-equilibrium and equilibrium descriptions. We demonstrate that it is more transparent to understand the horizon entropy in the…

广义相对论与量子宇宙学 · 物理学 2014-11-21 Kazuharu Bamba , Chao-Qiang Geng

In this paper we discuss the thermodynamics of the apparent horizon in $F(R)$ Ho\v{r}ava-Lifshitz gravity in equilibrium and non-equilibrium ensembles. We show that the second law of thermodynamics can be satisfied in this non relativistic…

广义相对论与量子宇宙学 · 物理学 2016-02-22 Abdul Jawad , Shamaila Rani , Davood Momeni , Faiza Gulshan , Ratbay Myrzakulov

In the present paper, we study the thermodynamics behavior of the field equations for the generalized f(T) gravity with an arbitrary coupling between matter and the torsion scalar. In this regard, we explore the verification of the first…

广义相对论与量子宇宙学 · 物理学 2017-01-17 Tahereh Azizi , Najibeh Borhani

We review thermodynamic properties of modified gravity theories such as $F(R)$ gravity and $f(T)$ gravity, where $R$ is the scalar curvature and $T$ is the torsion scalar in teleparallelism. In particular, we explore the equivalence between…

广义相对论与量子宇宙学 · 物理学 2016-06-22 Kazuharu Bamba

An equilibrium picture of thermodynamics is discussed at the apparent horizon of FRW universe in $f(T,T_G)$ gravity, where $T$ represents the torsion invariant and $T_G$ is the teleparallel equivalent of the Gauss-Bonnet term. It is found…

广义相对论与量子宇宙学 · 物理学 2015-11-04 M. Zubair

We study thermodynamics of the apparent horizon in $F(R)$ gravity. In particular, we demonstrate that a $F(R)$ gravity model with realizing a crossing of the phantom divide can satisfy the second law of thermodynamics in the effective…

高能物理 - 理论 · 物理学 2009-09-28 Kazuharu Bamba , Chao-Qiang Geng

In this paper, we study thermodynamical properties of the apparent horizon in a universe governed by quasi-topological gravity. Our aim is twofold. First, by using the variational method we derive the general form of Friedmann equation in…

高能物理 - 理论 · 物理学 2015-06-16 M. H. Dehghani , A. Sheykhi , R. Dehghani

We investigate the thermodynamics at the apparent horizon of the FRW universe in $f(R,T)$ theory under non-equilibrium description. The laws of thermodynamics have been discussed for two particular models of $f(R,T)$ theory. The first law…

广义相对论与量子宇宙学 · 物理学 2014-09-26 M. Sharif , M. Zubair

We consider a spatially flat Friedmann-Lemaitre-Robertson-Walker space time and investigate the second law and the generalized second law of thermodynamics for apparent horizon in generalized modified Gauss Bonnet theory of gravity (whose…

广义相对论与量子宇宙学 · 物理学 2011-01-17 H. Mohseni Sadjadi

This paper explores the non-equilibrium behavior of thermodynamics at the apparent horizon of isotropic and homogeneous universe model in $f(\mathcal{G},T)$ gravity ($\mathcal{G}$ and $T$ represent the Gauss-Bonnet invariant and trace of…

广义相对论与量子宇宙学 · 物理学 2018-03-13 M. Sharif , Ayesha Ikram

By employing the general expression of temperature $T_{h}=|\kappa|/2\pi = \frac{1}{2\pi \tilde{r}_{A}}(1-\frac{\dot{\tilde{r}}_{A}}{2H\tilde{r}_{A}})$ associated with the apparent horizon of a FRW universe and assuming a region of FRW…

广义相对论与量子宇宙学 · 物理学 2009-09-28 M. Akbar

We investigate the thermodynamical properties of the apparent horizon in a fractal universe. We find that one can always rewrite the Friedmann equation of the fractal universe in the form of the entropy balance relation $ \delta Q=T_h…

综合物理 · 物理学 2015-06-12 Ahmad Sheykhi , Zeinab Teimoori , Bin Wang

By applying the unified first law of thermodynamics on the apparent horizon of FRW universe, we get the entropy relation for the apparent horizon in quasi-topological gravity theory. Throughout the paper, the results of considering the…

广义相对论与量子宇宙学 · 物理学 2016-05-17 H. Moradpour , R. Dehghani

In this article we have used the recently introduced redefined Hawking temperature on the event horizon and investigated whether the generalised second law of thermodynamics (GSLT) and thermodynamic equilibrium holds for both the event and…

广义相对论与量子宇宙学 · 物理学 2016-05-04 Subhajit Saha , Subenoy Chakraborty

We study the generalized second law (GSL) of thermodynamics in $f(T)$ cosmology. We consider the universe as a closed bounded system filled with $n$ component fluids in the thermal equilibrium with the cosmological boundary. We use two…

综合物理 · 物理学 2013-02-25 Kazuharu Bamba , Mubasher Jamil , D. Momeni , Ratbay Myrzakulov

This paper is devoted to study the generalized second law of thermodynamics in $f(T)$ gravity. We use quantum corrections such as power-law and logarithmic corrected entropies to the horizon entropy along with Gibbs' equation in the thermal…

广义相对论与量子宇宙学 · 物理学 2014-12-17 M. Sharif , Shamaila Rani

With the usual definitions for the entropy and the temperature associated with the apparent horizon, we show that the unified first law on the apparent horizon is equivalent to the Friedmann equation for the scalar--tensor theory with…

广义相对论与量子宇宙学 · 物理学 2015-07-31 Yumei Huang , Yungui Gong , Dicong Liang , Zhu Yi

In the context of thermodynamics applied to our cosmological apparent horizon, we explicit in greater details our previous work which established the Friedmann Equations from projection of Hayward's Unified First Law. In particular, we show…

广义相对论与量子宇宙学 · 物理学 2015-02-17 Alexis Helou

Universal thermodynamics for FRW model of the Universe bounded by apparent/event horizon has been considered for massive gravity theory. Assuming Hawking temperature and using the unified first law of thermodynamics on the horizon, modified…

广义相对论与量子宇宙学 · 物理学 2017-02-21 Subhajit Saha , Saugata Mitra , Subenoy Chakraborty

In this paper, we study the nonlinear electrodynamics in the framework of $f(T)$ gravity for FRW universe along with dust matter, magnetic and torsion contributions. We evaluate the equation of state and deceleration parameters to explore…

广义相对论与量子宇宙学 · 物理学 2015-06-19 M. Sharif , Shamaila Rani
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