Cosmic evolution and thermal stability of Barrow holographic dark energy in a nonflat Friedmann-Robertson-Walker Universe

GG Luciano - Physical Review D, 2022 - APS
We study the cosmological evolution of a nonflat Friedmann-Robertson-Walker Universe
filled by pressureless dark matter and Barrow holographic dark energy (BHDE). The latter is …

[HTML][HTML] Saez–Ballester gravity in Kantowski–Sachs Universe: A new reconstruction paradigm for Barrow Holographic Dark Energy

GG Luciano - Physics of the Dark Universe, 2023 - Elsevier
Abstract We reconstruct Barrow Holographic Dark Energy (BHDE) within the framework of
Saez–Ballester Scalar Tensor Theory. As a specific background, we consider a …

Thermal stability of Tsallis holographic dark energy in nonflat universe

M Abdollahi Zadeh, A Sheykhi, H Moradpour - General Relativity and …, 2019 - Springer
We consider a nonflat Friedmann–Robertson–Walker universe filled by a pressureless dark
matter and Tsallis holographic dark energy (THDE) whose IR cutoff is the apparent horizon …

Physical constraints on interacting dark energy models

JE Gonzalez, HHB Silva, R Silva, JS Alcaniz - The European Physical …, 2018 - Springer
Physical limits on the equation-of-state (EoS) parameter of a dark energy component non-
minimally coupled with the dark matter field are examined in light of the second law of …

Extended ΛCDM model and viscous dark energy: A Bayesian analysis

WJC Da Silva, R Silva - Journal of Cosmology and Astroparticle …, 2019 - iopscience.iop.org
We propose an approach considering the nonextensive effects in the context of the Verlinde
theory in order to address an extended cosmological model in the context of viscous dark …

Testing the warmness of dark matter

S Kumar, RC Nunes, SK Yadav - Monthly Notices of the Royal …, 2019 - academic.oup.com
Dark matter (DM) as a pressureless perfect fluid provides a good fit of the standard Λ cold
dark matter (ΛCDM) model to the astrophysical and cosmological data. In this paper, we …

Simpler than vacuum: Antiscalar alternatives to black holes

MA Makukov, EG Mychelkin - Physical Review D, 2018 - APS
The Janis-Newman-Winicour and Papapetrou metrics represent counterparts to the
Schwarzschild black hole with scalar and antiscalar background fields, correspondingly …

Forecast and analysis of the cosmological redshift drift

R Lazkoz, I Leanizbarrutia, V Salzano - The European Physical Journal C, 2018 - Springer
The cosmological redshift drift could lead to the next step in high-precision cosmic geometric
observations, becoming a direct and irrefutable test for cosmic acceleration. In order to test …

A note on the relations between thermodynamics, energy definitions and Friedmann equations

H Moradpour, RC Nunes, EMC Abreu… - Modern Physics Letters …, 2017 - World Scientific
We investigate the relation between the Friedmann and thermodynamic pressure equations,
through solving the Friedmann and thermodynamic pressure equations simultaneously. Our …

Signature flip in deceleration parameter: a thermodynamic phase transition?

T Duary, N Banerjee, A Dasgupta - The European Physical Journal C, 2023 - Springer
Abstract Using the Hayward–Kodama temperature for the apparent horizon, it is found that
matter content in the Universe is not thermodynamically stable, and the entry to the late …