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We apply the full set of most update dynamical and geometrical data in cosmology to the nonextensive Barrow entropic holographic dark energy. We show that the data point towards an extensive Gibbs-like entropic behaviour for the…

宇宙学与河外天体物理 · 物理学 2023-03-22 Tomasz Denkiewicz , Vincenzo Salzano , Mariusz P. Dabrowski

Following the holographic principle, which suggests that the energy density of dark energy may be proportional inversely to the area of the event horizon of the Universe, we have proposed a new energy density of dark energy through the…

广义相对论与量子宇宙学 · 物理学 2023-01-25 H. R. Fazlollahi

We study the plausibility of a holographic dark energy (HDE) model using the form of horizon entropy proposed by Viaggiu in 2014. This form of entropy is a generalization of the usual Bekenstein-Hawking entropy, having an extra term arising…

广义相对论与量子宇宙学 · 物理学 2026-03-17 Somnath Saha , Subhajit Saha , Nilanjana Mahata

We construct a new cosmological holographic dark energy scenario based on Loop Quantum Gravity inspired entropy, instead of the standard Bekenstein-Hawking one. The former is an extended black-hole entropy that arises from non-extensive…

广义相对论与量子宇宙学 · 物理学 2023-10-03 Andreas Lymperis

In this work, we perform reconstruction of \( f(Q) \) gravity inspired by the New Agegraphic Dark Energy (NADE) model, aiming to account for the Universe's late time acceleration without invoking a cosmological constant. Utilizing a power…

宇宙学与河外天体物理 · 物理学 2025-07-02 Rajdeep Mazumdar , Kalyan Malakar , Mrinnoy M. Gohain , Kalyan Bhuyan

We revisit the dark degeneracy that arises from the Einstein equations relating geometry to the total cosmic substratum but not resolving its individual components separately. We establish the explicit conditions for the dark degeneracy in…

宇宙学与河外天体物理 · 物理学 2020-02-17 Rodrigo von Marttens , Lucas Lombriser , Martin Kunz , Valerio Marra , Luciano Casarini , Jailson Alcaniz

A generalized mass-to-horizon entropy has recently been proposed as an extension of the Bekenstein-Hawking area law, derived from a modified mass-horizon relation constructed to ensure consistency with the Clausius equation. Within the…

广义相对论与量子宇宙学 · 物理学 2025-10-27 Giuseppe Gaetano Luciano , Andronikos Paliathanasis

We study a process of equilibration of holographic dark energy (HDE) with the cosmic horizon around the dark-energy dominated epoch. This process is characterized by a huge amount of information conveyed across the horizon, filling thereby…

广义相对论与量子宇宙学 · 物理学 2010-12-09 R. Horvat

The cosmographic approach is used to determine the parameters of the Barrow entropic dark energy model. The model parameters are expressed through the current kinematic characteristics of Universe expansion.

广义相对论与量子宇宙学 · 物理学 2024-03-13 Yu. L. Bolotin , V. V. Yanovsky

We derive the modified Friedmann equation corresponding to the power-law corrected entropy-area relation $S_{\rm A}=\frac{A}{4}[1-K_{\alpha} A^{1-\frac{\alpha}{2}}]$ which is motivated by the entanglement of quantum fields in and out of the…

综合物理 · 物理学 2011-09-07 K. Karami , A. Abdolmaleki , N. Sahraei , S. Ghaffari

We consider a correspondence between the tachyon dark energy model and Barrow holographic dark energy (BHDE). The latter is a modified scenario based on the application of the holographic principle with Barrow entropy instead of the usual…

高能物理 - 理论 · 物理学 2025-03-25 Giuseppe Gaetano Luciano , Yang Liu

In this paper, we study the effects which are produced by the interaction between a brane Universe and the bulk in which the Universe is embedded. Taking into account the effects produced by the interaction between a brane Universe and the…

广义相对论与量子宇宙学 · 物理学 2015-11-03 Antonio Pasqua , Surajit Chattopadhyay , Ratbay Myrzakulov

We discuss the cosmological consequences of a model based on a non-local infrared modification of Einstein equations. We find that the model generates a dynamical dark energy that can account for the presently observed value of $\Omega_{\rm…

高能物理 - 理论 · 物理学 2015-06-16 Michele Maggiore

Here, we peruse cosmological usage of the most promising candidates of dark energy in the framework of f(R) theory. We reconstruct the different f(R) modified gravity models in the spatially flat FRW universe according to the ordinary and…

广义相对论与量子宇宙学 · 物理学 2011-07-18 K. Karami , M. S. Khaledian

Among various scenarios to explain the acceleration of the universe expansion, the holographic dark energy (HDE) model has got a lot of enthusiasm recently. In the derivation of holographic energy density, the area relation of the black…

综合物理 · 物理学 2011-09-28 Ahmad Sheykhi , Mubasher Jamil

We develop new modified cosmological scenarios by applying the first law of thermodynamics at the Universe horizon, utilizing a new entropic functional that generalizes the standard Boltzmann-Gibbs-Shannon entropy. In particular, starting…

广义相对论与量子宇宙学 · 物理学 2026-02-24 G. G. Luciano , E. N. Saridakis

In the context of f(G) modified gravity, we address the cosmic application of the most generalized form of holographic dark energy (The European Physical Journal C, 77, (2017): 1-8) in this study, as well as a specific instance of it in the…

综合物理 · 物理学 2025-10-10 Surajit Chattopadhyay

We construct a generalized interacting model of Barrow Holographic Dark Energy (BHDE) with infrared cutoff being given by the Hubble horizon. We analyze the cosmological evolution of a flat Friedmann-Lema\^itre-Robertson-Walker Universe…

广义相对论与量子宇宙学 · 物理学 2025-03-25 Giuseppe Gaetano Luciano , Jaume Giné

Holographic dark energy cosmology, also known as entropic cosmology, provides a concrete physical understanding of the late accelerated expansion of the universe. The acceleration appears to be a consequence of entropy associated with…

广义相对论与量子宇宙学 · 物理学 2024-06-03 Facundo Abaca , Dario Javier Zamora

Entropic cosmology with the R\'{e}nyi entropy of the apparent horizon $S_R=(1/\alpha)\ln(1+\alpha S_{BH})$, where $S_{BH}$ is the Bekenstein--Hawking entropy, is studied. By virtue of the thermodynamics-gravity correspondence a model of…

综合物理 · 物理学 2026-05-04 S. I. Kruglov