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相关论文: Thermodynamic formulation of Cotton gravity in the…

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Here, we consider new nonadditive entropy of the apparent horizon $S_K=S_{BH}/(1+\gamma S_{BH})$ with $S_{BH}$ being the Bekenstein--Hawking entropy. This is an alternative of the R\'{e}nyi and Tsallis entropies, that allows us, by…

综合物理 · 物理学 2025-11-18 S. I. Kruglov

It was shown by Jacobson in 1995 that the Einstein equation can be derived as a local constitutive equation for an equilibrium spacetime thermodynamics. With the aim to understand if such thermodynamical description is an intrinsic property…

广义相对论与量子宇宙学 · 物理学 2017-12-27 Ramit Dey , Stefano Liberati , Daniele Pranzetti

It is well known that, for a wide class of spacetimes with horizons, Einstein equations near the horizon can be written as a thermodynamic identity. It is also known that the Einstein tensor acquires a highly symmetric form near static, as…

广义相对论与量子宇宙学 · 物理学 2009-07-30 Dawood Kothawala , T. Padmanabhan

The thermodynamics-gravity conjecture reveals that one can derive the gravitational field equations by using the first law of thermodynamics and vice versa. Considering the entropy associated with the horizon in the form of non-extensive…

广义相对论与量子宇宙学 · 物理学 2021-11-04 Mahnaz Asghari , Ahmad Sheykhi

We use astrophysical data to shed light on fundamental physics by constraining parametrized theoretical cosmological and gravitational models. Gravitational parameters are those constants that parametrize possible departures from Einstein's…

天体物理学 · 物理学 2008-08-18 Yi Mao

A new conception is proposed in Ref.\cite{Verlinde:2010hp,Padmanabhan:2009kr} that gravity is one kind of entropic force. In this letter, we try to discuss its applications to the modified gravities by using three different corrections to…

高能物理 - 理论 · 物理学 2011-08-05 Yi Zhang , Yun-gui Gong , Zong-Hong Zhu

We consider spherical gravitational perturbations of AdS4 space-time satisfying general boundary conditions at spatial infinity. Using the holographic renormalization method, we compute the energy-momentum tensor and show that it can always…

高能物理 - 理论 · 物理学 2009-03-27 Ioannis Bakas

In this paper, we have presented the cosmological model of the Universe that represents late time cosmic acceleration in torsion based gravitational theory, the $f(T)$ gravity. A well motivated parametrization for the Hubble parameter has…

广义相对论与量子宇宙学 · 物理学 2025-11-04 Suraj Kumar Behera , Pratik P. Ray , B. Mishra

Black hole thermodynamics in Lorentz-violating gravity is subtle because different excitations propagate at different speeds and hence identify different causal horizons. We revisit Einstein--AEther gravity using the covariant phase space…

广义相对论与量子宇宙学 · 物理学 2026-04-01 Walter Arata , Stefano Liberati , Giulio Neri

In this work were studied quantum models of a Friedmann-Robertson-Walker (FRW) cosmology in the framework of the gravity's theory proposed by Ho\v{r}ava, the so-called Ho\v{r}ava-Lifshitz theory of the gravity. It was used the Ho\v{r}ava…

广义相对论与量子宇宙学 · 物理学 2015-12-04 Laysa G. Martins , José A. C. Nogales

We study cosmological dynamics of the energy-momentum squared gravity. By adding the squared of the matter field's energy-momentum tensor ($\zeta\, \textbf{T}^{2}$) to the Einstein Hilbert action, we obtain the Einstein's field equations…

广义相对论与量子宇宙学 · 物理学 2021-07-30 Marzieh Faraji , Narges Rashidi , Kourosh Nozari

In this work we apply the gravity-thermodynamics approach for the case of generalized mass-to-horizon entropy, which is a two-parameter extension of Bekenstein-Hawking entropy that arises from the extended mass-to-horizon relation, that is…

广义相对论与量子宇宙学 · 物理学 2025-04-01 Spyros Basilakos , Andreas Lymperis , Maria Petronikolou , Emmanuel N. Saridakis

We derive the generalized Friedmann equation governing the cosmological evolution inside the thick brane model in the presence of two curvature correction terms: a four-dimensional scalar curvature from induced gravity on the brane, and a…

高能物理 - 理论 · 物理学 2014-11-18 Shao-Feng Wu , Guo-Hong Yang , Peng-Ming Zhang

In this paper, we discuss the Bianchi type-I cosmological model in the framework of symmetric teleparallel gravity say $f(Q)$ gravity in which the non-metricity term $Q$ is responsible for the gravitational interaction. We consider a…

广义相对论与量子宇宙学 · 物理学 2023-04-05 M. Koussour , S. H. Shekh , M. Govender , M. Bennai

In this article, our goal is to investigate the cosmological dynamics and structure formation in a modified cosmological framework inspired by a generalized mass-to-horizon entropy relation and consistent with the Clausius relation.…

广义相对论与量子宇宙学 · 物理学 2026-04-20 Subhra Mondal , Amitava Choudhuri

We study the scenario of Kanadiakis horizon entropy cosmology which arises from the application of the gravity-thermodynamics conjecture using the Kaniadakis modified entropy. The resulting modified Friedmann equations contain extra terms…

We study the cosmological and thermodynamic implications of holographic dark energy derived from the Kaniadakis deformation of the Bekenstein-Hawking entropy. Within a spatially flat FLRW background, the generalized entropy leads to an…

广义相对论与量子宇宙学 · 物理学 2026-03-24 Manuel Gonzalez-Espinoza , Samuel Lepe , Joel F. Saavedra , Francisco Tello-Ortiz

We extend the thermodynamic derivation of gravity in the Jacobson framework by generalizing the Clausius relation through a nontrivial entropy functional. We show that entropy deformations appear as modifications of the effective…

广义相对论与量子宇宙学 · 物理学 2026-04-14 H. R. Fazlollahi

A power-law corrected entropy based on a quantum entanglement is considered to be a viable black-hole entropy. In this study, as an alternative to Bekenstein-Hawking entropy, a power-law corrected entropy is applied to Padmanabhan's…

广义相对论与量子宇宙学 · 物理学 2017-11-13 Nobuyoshi Komatsu

Recently, we have investigated the dynamics of the universe in tachyon cosmology with non-minimal coupling to matter \cite{faraj}-\cite{faraj3}. In particular, for the interacting holographic dark energy (IHDE), the model is studied in…

广义相对论与量子宇宙学 · 物理学 2016-07-26 H. Farajollahi , A. Ravanpak , M. Abolghasemi