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相关论文: Holographic dark energy through Loop Quantum Gravi…

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We have considered a cosmological model of holographic dark energy interacting with dark matter and another unknown component of dark energy of the universe. We have assumed two interaction terms $Q$ and $Q'$ in order to include the…

广义相对论与量子宇宙学 · 物理学 2015-05-19 Ujjal Debnath

We introduce a holographic dark energy model that incorporates the first-order approximate Kaniadaski entropy, utilizing the Hubble horizon, $1/H$, as the infrared cutoff. We investigate the cosmological evolution within this framework. The…

宇宙学与河外天体物理 · 物理学 2024-06-14 Wei Fang , Guo Chen , Chao-Jun Feng , Wei Du , Chenggang Shu

We argue that a unitary description of the formation and evaporation of a black hole implies that the Bekenstein-Hawking entropy is the "entropy of a vacuum": the logarithm of the number of possible independent ways in which quantum field…

高能物理 - 理论 · 物理学 2014-11-11 Yasunori Nomura , Sean J. Weinberg

We review recent results on the cosmological models based on the holographic principle which were proposed to explain the most of the problems occurring in the Standard Cosmological Model. It is shown that these models naturally solve the…

宇宙学与河外天体物理 · 物理学 2015-09-16 Yu. L. Bolotin , O. A. Lemets , D. A. Yerokhin , L. G. Zazunov

Interest on the possible future scenarios the universe could have has grew substantially with breakthroughs on late-time acceleration. Holographic dark energy (HDE) presents a very interesting approach towards addressing late-time…

广义相对论与量子宇宙学 · 物理学 2026-03-19 I. Brevik , Maxim Khlopov , S. D. Odintsov , Alexander V. Timoshkin , Oem Trivedi

It is well-known that any modification to the entropy expression not only change the energy density of the holographic dark energy, but also modifies the cosmological field equations through thermodynamics-gravity correspondence. Here we…

广义相对论与量子宇宙学 · 物理学 2026-05-28 A. Sheykhi , A. Asvar , E. Ebrahimi

Quantum black holes within the loop quantum gravity (LQG) framework are considered. The number of microscopic states that are consistent with a black hole of a given horizon area $A_0$ are counted and the statistical entropy, as a function…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Alejandro Corichi , Jacobo Diaz-Polo , Enrique Fernandez-Borja

We investigate the new agegraphic dark energy (NADE) model with power-law corrected entropy in the framework of Ho\v{r}ava-Lifshitz cosmology. For a non-flat universe containing the interacting power-law entropy-corrected NADE (PLECNADE)…

综合物理 · 物理学 2012-05-14 K. Karami , A. Sheykhi , Mubasher Jamil , R. Myrzakulov , S. Ghaffari , A. Abdolmaleki

Using a correspondence between the f(T)-gravity with the power-law entropy corrected version of the holographic dark energy model, we reconstruct the holographic f(T)-gravity model with power-law entropy correction. We fit the model…

广义相对论与量子宇宙学 · 物理学 2013-11-06 K. Karami , S. Asadzadeh , A. Abdolmaleki , Z. Safari

A microscopic derivation of the Bekenstein-Hawking entropy for the Schwarzschild black hole was presented earlier by using a non-trivial phase space. It was argued that the Schwarzschild black hole behaves like a 1D quantum mechanical…

广义相对论与量子宇宙学 · 物理学 2024-09-06 Naman Kumar

We investigate a kind of holographic dark energy model with the future event horizon the IR cutoff and the equation of state -1. In this model, the constraint on the equation of state automatically specifies an interaction between matter…

天体物理学 · 物理学 2007-05-23 Hui Li , Zong-kuan Guo , Yuan-zhong Zhang

We extend the Loop Quantum Cosmology matter bounce scenario in order to include a dark energy era, which ends abruptly at a Rip singularity where the scale factor and the Hubble rate diverge. In the "deformed matter bounce scenario", the…

广义相对论与量子宇宙学 · 物理学 2016-09-21 S. D. Odintsov , V. K. Oikonomou

Treating macro-black hole as quantum states, and using Brown-York quaselocal gravitational energy definition and Heisenberg uncertainty principle, we find out the classical horizon with singularity spreads into a quantum horizon in which…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Hua Bai , Mu-Lin Yan

Despite the significant accomplishments of general relativity, numerous unresolved issues persist in our understanding of the cosmos. One of the most perplexing challenges is the ongoing accelerated expansion of the Universe, which…

宇宙学与河外天体物理 · 物理学 2023-11-22 M. Koussour , N. Myrzakulov , Alnadhief H. A. Alfedeel , Amare Abebe

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 construct condensate states encoding the continuum spherically symmetric quantum geometry of an horizon in full quantum gravity, i.e. without any classical symmetry reduction, in the group field theory formalism. Tracing over the bulk…

广义相对论与量子宇宙学 · 物理学 2016-05-27 Daniele Oriti , Daniele Pranzetti , Lorenzo Sindoni

In this work, we propose a new dark energy model by applying the Barrow entropy and the holographic principle, with a time scale as IR cut off. Analysing the conformal time as well as universe's age as infrared cut-offs, we explore the…

广义相对论与量子宇宙学 · 物理学 2020-12-29 Umesh Kumar Sharma , Gunjan Varshney , Vipin Chandra Dubey

We have reexamined the holographic dark energy model by considering the spatial curvature. We have refined the model parameter and observed that the holographic dark energy model does not behave as phantom model. Comparing the holographic…

高能物理 - 理论 · 物理学 2009-11-10 Yungui Gong , Bin Wang , Yuan-Zhong Zhang

According to the holographic principle, the maximum amount of information stored in a region of space scales as the area of its two-dimensional surface, like a hologram. We show that the holographic principle can be understood heuristically…

广义相对论与量子宇宙学 · 物理学 2016-10-21 Y. Jack Ng

We propose a new dark energy (DE) model from four parameter generalized entropy function of apparent horizon in a spatially flat universe. Such kind of generalized entropy is able to generalize all the known entropies proposed so far, for…

广义相对论与量子宇宙学 · 物理学 2025-07-22 Priyanka Adhikary , Sudipta Das , Sergei D. Odintsov , Tanmoy Paul