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pro vyhledávání: '"Ghaffari, S."'
Taking the nonextensive Tsallis and R\'enyi entropies into account, we explore thermodynamic properties and phase transitions of the Kerr-Newman black holes (KNBH) in the microcanonical and canonical ensembles. We also compare our results with those
Externí odkaz:
http://arxiv.org/abs/2312.13407
Autor:
Sheykhi, A., Ghaffari, S.
Publikováno v:
Physics of the Dark Universe 41 (2023) 101241
We revisit agegraphic dark energy (ADE) model when the entropy associated with the apparent horizon is in the form of Barrow entropy, $S\sim A^{1+\delta/2}$, where $0\leq\delta\leq1$ indicates the amount of the quantum-gravitational deformation effec
Externí odkaz:
http://arxiv.org/abs/2304.03261
We construct a holographic model for dark energy in the Brans-Dicke cosmology by using the holographic principle considering the Barrow entropy instead of the standard Bekenstein-Hawking one. The former arises from the effort to account for quantum-g
Externí odkaz:
http://arxiv.org/abs/2209.00903
Publikováno v:
In Materials Chemistry and Physics 1 January 2025 329
Autor:
Ghaffari, S.
By using the holographic hypothesis and Kaniadakis generalized entropy, which is based on relativistic statistical theory and modified Boltzmann-Gibbs entrory, we build Kaniadakis holographic dark energy (DE) model in the Brans-Dicke framework. We dr
Externí odkaz:
http://arxiv.org/abs/2112.05813
Publikováno v:
In Physics of the Dark Universe May 2024 44
Publikováno v:
Modern Physics Letters A: Vol. 35, 2050276 (2020)
Bearing holographic dark energy hypothesis in mind, the ability of vacuum energy in describing the current accelerated universe is studied in the framework of Rastall theory. Here, in addition to the ordinary approach in which it is expected that thi
Externí odkaz:
http://arxiv.org/abs/2002.04972
Publikováno v:
Mod. Phys. Lett. A, 34 1950304 (2019)
Focusing on the special case of generalized Rastall theory, as a subclass of the non-minimal curvature-matter coupling theories in which the field equations are mathematically similar to the Einstein field equations in the presence of cosmological co
Externí odkaz:
http://arxiv.org/abs/1910.07878
Publikováno v:
Modern Physics Letters A, 36, 2150082 (2021)
In recent years, Rastall gravity is undergoing a considerable surge in popularity. This theory purports to be a modified gravity theory with a non-conserved energy-momentum tensor ({\rm EMT}) and an unusual non-minimal coupling between matter and geo
Externí odkaz:
http://arxiv.org/abs/1909.12085
We study the cosmological consequences of interacting Tsallis holographic dark energy model in the framework of the fractal universe, in which, the Hubble radius is considered as the IR cut-off. We drive the equation of state (EoS) parameter, deceler
Externí odkaz:
http://arxiv.org/abs/1908.10602