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相关论文: Entropic Gravity and Cosmology in Kaniadakis Stati…

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Alternative gravitational theories described by Lagrangians depending on general functions of the Ricci scalar have been proven to give coherent theoretical models to describe the experimental evidence of the acceleration of universe at…

高能物理 - 理论 · 物理学 2011-07-19 G. Allemandi , A. Borowiec , M. Francaviglia

Motivated by the notion that the mathematics of gravity can be reproduced from a statistical requirement of maximal entropy, we study the consequence of introducing an entropic source term in the Einstein-Hilbert action. For a spatially…

广义相对论与量子宇宙学 · 物理学 2024-03-20 Soumya Chakrabarti

This work comprises a study of the thermodynamic behavior of modified $f(\bar{R},\bar{T})$ gravity, which had been developed based on a non-canonical theory known as K-essence theory. In this development, we use the Dirac-Born-Infeld (DBI)…

广义相对论与量子宇宙学 · 物理学 2024-10-14 Arijit Panda , Goutam Manna , Saibal Ray , Maxim Khlopov , Praveen Kumar Dhankar

In a recent publication in this journal, Erik Verlinde attempts to show that gravity should be viewed not as a fundamental force, but rather as an emergent thermodynamic phenomenon arising from an unspecified microscopic theory via…

广义相对论与量子宇宙学 · 物理学 2012-01-13 Jonathan J. Roveto , Gerardo Munoz

We start with the cosmic Friedmann equations, where we adopt a novel perspective rooted in a Lagrangian formulation grounded in Newtonian mechanics and the first law of thermodynamics. Our investigation operates under the assumption that…

广义相对论与量子宇宙学 · 物理学 2024-06-19 Jaume de Haro

Verlinde's ideas considered gravity as an emergent force originated from entropic concepts. This hypothesis generated a huge number of papers through the last recent years concerning classical and quantum approaches about the issue. In a…

高能物理 - 理论 · 物理学 2015-06-16 Everton M. C. Abreu , Jorge Ananias Neto

In this paper, employing the exponential corrected entropy (Chatterjee and Ghosh in Phys Rev Lett 125:041302, 2020), we derive the modified Friedmann equations from the first law of thermodynamics at apparent horizon and Verlinde's entropic…

广义相对论与量子宇宙学 · 物理学 2024-07-23 Özgür Ökcü , Ekrem Aydiner

Inspired by Verlinde's idea, some modified versions of entropic gravity have appeared in the literature. Extending them in a unified formalism, we derive the generalized gravitational equations accordingly. From gravitational equations, the…

高能物理 - 理论 · 物理学 2012-11-27 Tower Wang

Alternative theories of gravity may serve to overcame several shortcomings of the standard cosmological model but, in their weak field limit, General Relativity must be recovered so as to match the tight constraints at the Solar System…

广义相对论与量子宇宙学 · 物理学 2018-06-06 Mariafelicia De Laurentis , Ivan De Martino , Ruth Lazkoz

In the paper, hep-th/0501055 (R.G. Cai and S.P. Kim, JHEP {\bf 0502}, 050 (2005)), it is shown that by applying the first law of thermodynamics to the apparent horizon of an FRW universe and assuming the geometric entropy given by a quarter…

高能物理 - 理论 · 物理学 2008-11-26 M. Akbar , Rong-Gen Cai

Padmanabhan [arXiv:1206.4916] argues that the cosmic acceleration can be understood from the perspective that spacetime dynamics is an emergence phenomena. By calculating the difference between the surface degrees of freedom and the bulk…

广义相对论与量子宇宙学 · 物理学 2013-04-19 Ahmad Sheykhi

We apply a recent argument of Verlinde to loop quantum gravity, to conclude that Newton's law of gravity emerges in an appropriate limit and setting. This is possible because the relationship between area and entropy is realized in loop…

广义相对论与量子宇宙学 · 物理学 2010-02-22 Lee Smolin

In a recent paper by Ambr\'osio et al. [arXiv:2405.14799], it was shown that the gravitational force law of the Modified Newtonian Dynamics (MOND) phenomenology can be derived within the framework of entropic gravity and the holographic…

广义相对论与量子宇宙学 · 物理学 2024-06-05 Julius Lehmann

In this paper we study the viability of an entropic cosmological model. The effects of entropic gravity are derived from a modified entropy-area relationship with a volumetric entropy term. This model describes a late time limit cosmic…

广义相对论与量子宇宙学 · 物理学 2024-03-07 Javier Chagoya , I. Díaz-Saldaña , J. C. López-Domínguez , M. Sabido

Gravity is so different from other fundamental forces that it is now essentially treated as a non-fundamental force of entropic origin. A number of good studies have been carried out in this direction. Quantum gravity has also significantly…

广义相对论与量子宇宙学 · 物理学 2020-12-11 M. Hameeda , Q. Gani , B. Pourhassan , M. C. Rocca

It is shown that the accelerated expansion of the universe in the framework of the relativistic theory of gravitation can be achieved by the introduction of the quintessential term in the energy-momentum tensor. The value of the minimum…

广义相对论与量子宇宙学 · 物理学 2007-05-23 V. L. Kalashnikov

The paper deals with the calculation of the gravitational entropy in the context of teleparallel gravity for de Sitter space-time. In such a theory it is possible to define gravitational energy and pressure, thus we use those expressions to…

广义相对论与量子宇宙学 · 物理学 2016-07-20 S. C. Ulhoa , E. P. Spaniol

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 discuss the foundations of the statistical gravity theory we proposed in a recent publication [Riccardo Fantoni, Quantum Reports, {\bf 6}, 706 (2024)].

综合物理 · 物理学 2025-04-10 Riccardo Fantoni

A detailed analysis of dynamics of cosmological models based on $R^{n}$ gravity is presented. We show that the cosmological equations can be written as a first order autonomous system and analyzed using the standard techniques of dynamical…

广义相对论与量子宇宙学 · 物理学 2009-11-10 S. Carloni , P. K. S. Dunsby , S. Capozziello , A. Troisi