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Hooman Moradpour

Academic rank: Associate Professor
ORCID:
Education: PhD.
ScopusId:
HIndex:
Faculty: Research Institute for Astronomy and Astrophysics
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Phone: -

Research

Title
Cosmological Implications of the Generalized Entropy Based Holographic Dark Energy Models in Dynamical Chern-Simons Modified Gravity
Type
JournalPaper
Keywords
Modified gravity; dark energy; vacuum energy
Year
2019
Journal Advances in High Energy Physics
DOI
Researchers M Younas ، A Jawad ، Saba Qummer ، Hooman Moradpour ، S. Rani

Abstract

Recently, Tsallis, R´enyi, and Sharma-Mittal entropies have widely been used to study the gravitational and cosmological setups.We consider a flat FRWuniversewith linear interactionbetween dark energy and darkmatter.We discuss the dark energymodels using Tsallis, R´enyi, and Sharma-Mittal entropies in the framework of Chern-Simons modified gravity.We explore various cosmological parameters (equation of state parameter, squared sound of speed ) and cosmological plane (𝜔𝑑 − 𝜔󸀠 𝑑, where 𝜔󸀠 𝑑 is the evolutionary equation of state parameter). It is observed that the equation of state parameter gives quintessence-like nature of the universe in most of the cases. Also, the squared speed of sound shows stability of Tsallis and R´enyi dark energy model but unstable behavior for Sharma-Mittal dark energy model. The 𝜔𝑑 − 𝜔󸀠 𝑑 plane represents the thawing region for all dark energy models.