27 citations · 83 across the 13 of their papers we have counts for
14 papers
Constraining Modified Mass-to-Horizon Cosmology Through Primordial Inflationary Observables
A. Sheykhi, G. G. Luciano, A. Benkrane
We investigate slow-roll inflation in a modified cosmological framework inspired by a generalized mass-to-horizon relation (MHR), , where is a real parameter…
Ghost Dark Energy in the Modified Kaniadakis Cosmology
A. Dezhakam, A. Sheykhi, A. Dehyadegari
We investigate ghost dark energy (GDE) in a cosmological framework derived from Kaniadakis entropy. By applying the first law of thermodynamics to the FRW apparent horizon, we obta…
Resolving Galactic and Cluster Dynamics Without Dark Matter: Tsallis Entropy as the Unique Foundation of Emergent Gravity
S. Shamari, A. Sheykhi
While modified entropy models-such as Barrow, Tsallis, Kaniadakis,Power-law, Logarithmic, and Rényi entropies-have been widely explored in cosmological contexts, their implications…
Structure of Anisotropic Magnetized Neutron Stars in f(R,T) Gravity with Realistic Equation of State
M. Savari, G. H. Bordbar, J. Sedaghat +1
In this study, within the framework of f(R,T) modified gravity, we investigate the influence of coupling parameter, magnetic field and anisotropy parameter on the neutron star stru…
Emergence of the cosmic space inspired by mass-to-horizon entropy
Ahmad Sheykhi
The conception of gravity as an emergent phenomenon, rooted in the thermodynamics of spacetime, offers a radical departure from its geometric description. This paper investigates t…
Constraining Zero-Point Length from Gravitational Baryogenesis
Ava Shahbazi Sooraki, Ahmad Sheykhi
The existence of a fundamental zero-point length, , a minimal spacetime scale predicted by T-duality in string theory or quantum gravity theories, modifies the entropy associa…
MOND Theory and Thermodynamics of Spacetime
Ahamd Sheykhi, Leila Liravi
Starting from the Modified Newtonian Dynamics (MOND) theory and using an inverse approach, we construct a general form of the entropy expression associated with the horizon based o…
Modified cosmology through Kaniadakis entropy
Mahdi Kord Zangeneh, Ahmad Sheykhi
We explore a cosmological model inspired by the modified Kaniadakis entropy and disclose the influences of the modified Friedmann equations on the evolution of the Universe. We fin…
Growth of perturbations in higher dimensional Gauss-Bonnet FRW cosmology
Ahmad Sheykhi, Bita Farsi
We explore the influences of the higher order Gauss Bonnet (GB) correction terms on the growth of perturbations at the early stage of a (n + 1)-dimensional Friedmann-Robertson-Walk…
Lifshitz scaling effects on the holographic paramagnetic-ferromagnetic phase transition
B. Binaei Ghotbabadi, A. Sheykhi, G. H. Bordbar
We disclose the effects of Lifshitz dynamical exponent on the properties of holographic paramagnetic-ferromagnetic phase transition in the background of Lifshitz spacetime. To…
Topological black holes in mimetic gravity
Ahmad Sheykhi, Saskia Grunau
We construct some new classes of topological black hole solutions in the context of mimetic gravity. We study the uncharged and charged black holes, separately. In the absence of a…
Universality class of alternative phase space and Van der Waals criticality
Amin Dehyadegari, Bibhas Ranjan Majhi, Ahmad Sheykhi +1
A new perspective toward thermodynamic phase space of Reisser-Nordstrom (RN) black holes in an anti-de-Sitter (AdS) spaces was recently proposed [Phys. Lett. B 768 (2017) 235], whe…
Optical properties of Born-Infeld-dilaton-Lifshitz holographic superconductors
M. Kord Zangeneh, S. S. Hashemi, A. Dehyadegari +2
In this paper, we first study the Lifshitz-dilaton holographic superconductors with nonlinear Born-Infeld (BI) gauge field and obtain the critical temperature of the system for dif…
Holographic conductivity in the massive gravity with power-law Maxwell field
A. Dehyadegari, M. Kord Zangeneh, A. Sheykhi
We obtain a new class of topological black hole solutions in -dimensional massive gravity in the presence of the power-Maxwell electrodynamics. We calculate the conserved an…