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相关论文: Tsallis holographic dark energy for inflation

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Classical and quantum entropic properties of holographic dark energy (HDE) are considered in view of the fact that its entropy is far more restrictive than the entropy of a black hole of the same size. In cosmological settings (in which HDE…

广义相对论与量子宇宙学 · 物理学 2008-11-26 R. Horvat

A model of inflation produced by a viscous fluid is investigated and its compatibility with the holographic principle at the very early universe (as recently formulated for the holographic universe with a holographic cut-off radius) is…

广义相对论与量子宇宙学 · 物理学 2019-10-02 E. Elizalde , A. V. Timoshkin

We discuss Tsallis holographic dark energy (THDE) model in higher dimension. An interacting dark energy model is proposed with Generalized Chaplygin Gas (GCG) in the framework of Compact Kaluza-Klein gravity. It is shown that a stable…

广义相对论与量子宇宙学 · 物理学 2020-06-11 A. Saha , S. Ghose

We present a new cosmological model, based on the holographic principle, which shares many of the virtues of inflation. The very earliest semiclassical era of the universe is dominated by a dense gas of black holes, with equation of state…

高能物理 - 理论 · 物理学 2007-05-23 T. Banks , W. Fischler

We review the paradigm of holographic dark energy (HDE), which arises from a theoretical attempt of applying the holographic principle (HP) to the dark energy (DE) problem. Making use of the HP and the dimensional analysis, we derive the…

宇宙学与河外天体物理 · 物理学 2017-08-24 Shuang Wang , Yi Wang , Miao Li

In this paper we employ a recent proposal of C. Tsallis and formulate the first law of thermodynamics for gravitating systems in terms of the extensive but non-additive entropy. We pay a particular attention to an integrating factor for the…

高能物理 - 理论 · 物理学 2022-12-28 Petr Jizba , Gaetano Lambiase

The unifying approach to early-time and late-time universe based on phantom cosmology is proposed. We consider gravity-scalar system which contains usual potential and scalar coupling function in front of kinetic term. As a result, the…

高能物理 - 理论 · 物理学 2009-09-17 Shin'ichi Nojiri , Sergei D. Odintsov

In this paper, we investigate the dark energy phenomenon by studying the Tsallis holographic dark energy within the framework of Brans-Dicke (BD) scalar-tensor theory of gravity [Phys. Rev. \textbf{124}, 925 (1961)]. In this context, we…

广义相对论与量子宇宙学 · 物理学 2019-12-20 Y Aditya , Sanjay Mandal , P. K. Sahoo , D. R. K. Reddy

Holographic considerations may provide a glimpse of quantum gravity beyond what is currently accessible by other means. Here we apply holography to inflationary cosmology. We argue that the appropriate holographic bound on the total entropy…

高能物理 - 理论 · 物理学 2007-05-23 Andreas Albrecht , Nemanja Kaloper , Yong-Seon Song

The IR dynamics of effective holographic theories capturing the interplay between charge density and the leading relevant scalar operator at strong coupling are analyzed. Such theories are parameterized by two real exponents…

高能物理 - 理论 · 物理学 2010-12-06 C. Charmousis , B. Goutéraux , B. S. Kim , E. Kiritsis , Rene Meyer

This article extends the non-extensive entropy of Tsallis and uses this entropy to model an energy producing system in an absorbing heat bath. This modified non-extensive entropy is superficially identical to the one proposed by Tsallis,…

统计力学 · 物理学 2007-05-23 Mark Fleischer

The hypothesis of low entropy in the initial state of the universe usually explains the observed entropy increase is in only one time direction: the thermodynamic arrow of time. The Hamiltonian formalism is commonly used in the context of…

广义相对论与量子宇宙学 · 物理学 2024-08-27 Jackie C. H. Liu

Landauer's principle and the Holographic principle are used to derive the holographic information energy contribution to the Universe. Information energy density has increased with star formation until sufficient to start accelerating the…

宇宙学与河外天体物理 · 物理学 2011-05-24 Michael Paul Gough

In this paper we have considered the holographic dark energy and studied it's cosmology and thermodynamics. We have analysed the generalized second law (GSL) of thermodynamics in a flat universe consists of interacting dark energy and dark…

广义相对论与量子宇宙学 · 物理学 2014-02-03 Praseetha P. , Titus K. Mathew

We explore the effects of considering various infrared (IR) cutoffs, including the particle horizon, Ricci horizon and Granda-Oliveros (GO) cutoffs, on the properties of Tsallis holographic dark energy (THDE) model, proposed inspired by…

广义相对论与量子宇宙学 · 物理学 2018-11-20 M. Abdollahi Zadeh , A. Sheykhi , H. Moradpour , Kazuharu Bamba

In this letter we study a model of inflation in which the inflationary regimen comes from a type of holographic energy density. In particular, we consider the Granda-Oliveros proposal for the holographic energy density, which contains two…

广义相对论与量子宇宙学 · 物理学 2023-02-15 A. Oliveros , Mario A. Acero

The holographic dark energy model is obtained from a cosmological constant generated by generic quantum gravity effects giving a minimum length. By contrast, the usual bound for the energy density to be limited by the formation of a black…

高能物理 - 理论 · 物理学 2016-05-25 Horatiu Nastase

The paper investigates the Tsallis holographic dark energy (THDE) model in accordance with the apparent horizon as an infrared cut-off, in a non-flat universe. The cosmological evolution of the deceleration parameter and equation of state…

综合物理 · 物理学 2020-01-16 Vipin Chandra Dubey , Umesh Kumar Sharma , A. Beesham

This paper is a major revision of our previous work on the HST model of inflation. We identify the local fluctuations of the metric with fluctuations of the mass and angular momentum of black holes, and show that the consistency conditions…

高能物理 - 理论 · 物理学 2015-01-12 Tom Banks , Willy Fischler

The current work reports a study on bounce cosmology with a highly generalized holographic dark fluid inspired by S. Nojiri and S. D. Odintsov, 2017, European Physical Journal C, 77, pp.1-8. The holographic dark fluid that is mostly used…

综合物理 · 物理学 2024-08-12 Sanghati Saha , Surajit Chattopadhyay