Thermodynamic approach to holographic dark energy and the Rényi entropy

H Moradpour, SA Moosavi, IP Lobo, JPM Graça… - The European Physical …, 2018 - Springer
Using the first law of thermodynamics, we propose a relation between the system entropy (S)
and its IR (L) and UV (Λ Λ) cutoffs. In addition, applying this relation to the apparent horizon …

Friedmann equations from emergence of cosmic space

A Sheykhi - Physical Review D—Particles, Fields, Gravitation, and …, 2013 - APS
Padmanabhan [arXiv: 1206.4916] argues that the cosmic acceleration can be understood
from the perspective that spacetime dynamics is an emergence phenomena. By calculating …

Analysis of Reconstructed Modified Symmetric Teleparallel f(Q) Gravity

N Myrzakulov, SH Shekh, A Mussatayeva… - Frontiers in Astronomy …, 2022 - frontiersin.org
The existing analysis reports a reconstruction scheme of the newly proposed gravity say f
(Q) gravity through the scale factor of the form a (t)= a 0 tn= 1 1+ z by describing the power …

f (Q) Reconstruction: In the light of various modified gravity models

AK Singha, A Sardar, U Debnath - Physics of the Dark Universe, 2023 - Elsevier
In this article, we have tried to reform the symmetric f (Q) gravity in the light of some modified
Teleparallel Gravity (TG) theories like f (P), f (T), f (R), f (R, T), Einstein-Aether (EA), f (G) and …

Interacting ghost dark energy models with variable G and Λ

J Sadeghi, M Khurshudyan, A Movsisyan… - Journal of Cosmology …, 2013 - iopscience.iop.org
In this paper we consider several phenomenological models of variable Λ. Model of a flat
Universe with variable Λ and G is accepted. It is well known, that varying G and Λ gives rise …

Analysis of reconstructed modified f (Q, T) gravity

M Sharif, I Ibrar - Chinese Journal of Physics, 2024 - Elsevier
This paper studies the reconstruction criterion in the framework of f (Q, T) gravity using a
ghost dark energy model, where Q represents the non-metricity and T is the trace of energy …

Contact term, its holographic description in QCD and dark energy

AR Zhitnitsky - Physical Review D—Particles, Fields, Gravitation, and …, 2012 - APS
In this work we study the well-known contact term, which is the key element in resolving the
so-called U (1) A problem in QCD. We study this term using the dual holographic …

Study of dark energy models in f (R, T2) theory

M Sharif, MZ Gul, I Hashim - Chinese Journal of Physics, 2024 - Elsevier
This paper investigates the quantum chromodynamics ghost model of dark energy in the
framework of f (R, T 2) theory. The investigation centers on the non-interacting ghost dark …

Generalized ghost dark energy in f (Q) gravity

M Sharif, M Ajmal - Chinese Journal of Physics, 2024 - Elsevier
In this manuscript, we use the correspondence principle to construct the generalized ghost
dark energy f (Q) model, where Q is the non-metricity. For this purpose, we use the Friedman …

Interacting ghost dark energy in complex quintessence theory

Y Liu - The European Physical Journal C, 2020 - Springer
We employ a ghost model of interacting dark energy to obtain the equation of state ω ω for
ghost energy density in an FRW universe in complex quintessence theory. We reconstruct …