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Related papers: A Generalized Interacting Tsallis Holographic Dark…

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Understanding how early-universe inflation may emerge from generalized holographic energy densities within modified gravity motivates the present analysis. We develop a self-consistent inflationary scenario in which the Tsallis holographic…

General Relativity and Quantum Cosmology · Physics 2025-12-09 S. Taghavi , T. Golanbari , Kh. Saaidi

We generalize the holographic dark energy model described in Hubble length IR cutoff by assuming a slowly time varying function for holographic parameter $c^2$. We calculate the evolution of EoS parameter and the deceleration parameter as…

General Relativity and Quantum Cosmology · Physics 2015-06-11 M. Malekjani

The emergence of an increasingly strong tension between the Hubble rate inferred from early- and late-time observations has reinvigorated interest in nonstandard scenarios, with the aim of reconciling these measurements. One such model…

Cosmology and Nongalactic Astrophysics · Physics 2020-12-09 Matteo Lucca , Deanna C. Hooper

We consider a holographic cosmological model in which the infrared cutoff is fixed by the Ricci's length and dark matter and dark energy do not evolve separately but interact non-gravitationally with one another. This substantially…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Iván Durán , Diego Pavón

The holographic cut-off in generalized dark energy (HDE) formalism depends on its cut-off. Following this, a four-parameter generalized entropy has recently been developed. It reduces to various known entropies for appropriate parameter…

General Physics · Physics 2025-10-08 Sanghati Saha , Ertan Güdekli , Surajit Chattopadhyay

We study the Barrow holographic dark energy (BHDE) model using the apparent horizon as the infrared (IR) cut-off and ensuring thermodynamic consistency. However, the results show that the BHDE model without any interaction does not yield…

General Relativity and Quantum Cosmology · Physics 2025-01-31 Suphakorn Chunlen , Kraiwut Dakam

We investigate an interacting polytropic dark energy (PDE) model characterised by the equation of state $p_{d} = \alpha \rho_{d}^{\,1+\frac{1}{\beta}}$, where the interaction between dark energy and pressureless matter is modelled via a…

Cosmology and Nongalactic Astrophysics · Physics 2025-08-22 Elangbam Chingkheinganba Meetei , S. Surendra Singh

The main task of this paper is to realize a cosmic observational compatible universe in the framework of holographic dark energy model when the Hubble horizon $H$ is taken as the role of an IR cut-off. When the model parameter $c$ of a time…

Cosmology and Nongalactic Astrophysics · Physics 2009-09-28 Lixin Xu

In the current research, we have reported the Tsallis Holographic Dark Energy (THDE) (\textit{JCAP}, 2018(12), p.012.) model reconstructed within the framework of $f(Q, C)$ gravity (\textit{JCAP}, 2024(03), p.050.), combining entropy-based…

General Relativity and Quantum Cosmology · Physics 2026-05-19 Sanjeeda Sultana , Surajit Chattopadhyay

In this work, we explore the recently proposed new Tsallis agegraphic dark energy model in a flat FLRW Universe by taking the conformal time as IR cutoff with interaction. The deceleration parameter of the interacting new Tsallis agegraphic…

General Relativity and Quantum Cosmology · Physics 2021-05-07 Shikha Srivastava , Umesh Kumar Sharma , Vipin Chandra Dubey

In this work we have considered the modified holographic Ricci dark energy interacting with dark matter through a non-gravitational coupling. We took three phenomenological forms for the interaction term $Q$ in the model, where in general…

Cosmology and Nongalactic Astrophysics · Physics 2019-05-13 Praseetha P , Titus K Mathew

Barrow and Tsallis Holographic Dark Energy (HDE) are two recent extensions of the standard HDE framework, obtained by introducing generalized entropy corrections through the Barrow and Tsallis formalisms. In this work, we examine the…

General Relativity and Quantum Cosmology · Physics 2026-05-29 G. G. Luciano , A. Paliathanasis , G. Leon , A. Sheykhi , M. Motaghi

The purpose of this paper is to study the Tsallis agegraphic dark energy with an interaction term between dark energy and dark matter in the DGP brane-world scenario. For this, we assume some initial conditions to obtain the dark energy…

General Relativity and Quantum Cosmology · Physics 2022-03-17 Z. Feizi Mangoudehi

Dark energy might interact with cold dark matter in a direct, nongravitational way. However, the usual interacting dark energy models (with constant $w$) suffer from some catastrophic difficulties. For example, the $Q\propto\rho_{\rm c}$…

Cosmology and Nongalactic Astrophysics · Physics 2014-04-28 Yun-He Li , Xin Zhang

We investigate interacting scenarios which belong to a wider class, since they include a dynamical dark energy component whose equation of state follows various one-parameter parametrizations. We confront them with the latest observational…

Cosmology and Nongalactic Astrophysics · Physics 2019-11-20 Supriya Pan , Weiqiang Yang , Eleonora Di Valentino , Emmanuel N. Saridakis , Subenoy Chakraborty

We examine a spatially flat Friedmann-Robertson-Walker (FRW) universe filled with interacting dark matter and a modified holographic Ricci dark energy (MHRDE). The interaction term is selected as a significant rational function of the total…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Luis P. Chimento , Martín G. Richarte

As soon as an interaction between holographic dark energy and dark matter is taken into account, the identification of IR cutoff with Hubble radius $H^{-1}$, in flat universe, can simultaneously drive accelerated expansion and solve the…

High Energy Physics - Theory · Physics 2010-01-06 Ahmad Sheykhi

The some models of holographic dark energy for Randall-Sandrum brane are considered. For first class of dark energy models we take energy density in form $\sim L^{2\gamma-4}$ where $L$ is size of events horizon in Universe and $\gamma$ is…

General Relativity and Quantum Cosmology · Physics 2020-03-18 Artyom V. Astashenok , Alexander S. Tepliakov

The current research investigates the behavior of the Tsallis holographic dark energy (THDE) model with quintessence in a homogeneous and anisotropic Bianchi type-III (B-III) space-time. We construct the model by using two conditions (i)…

General Physics · Physics 2021-08-17 Gunjan Varshney , Anirudh Pradhan , Umesh Kumar Sharma

Observational data from supernovae type Ia, baryon acoustic oscillations, gas mass fraction in galaxy clusters, and the growth factor are used to reconstruct the the interaction rate of the holographic dark energy model recently proposed by…

General Relativity and Quantum Cosmology · Physics 2011-07-19 Diego Pavon , Anjan A. Sen