Swampland conjectures in hybrid metric-Palatini gravity

J Sadeghi, SN Gashti, F Darabi - Physics of the Dark Universe, 2022 - Elsevier
In this paper, we study a hybrid combination of Einstein–Hilbert action with curvature scalar
R, and a function f (R) in Palatini gravity within the context of inflationary scenario, from the …

Bardeen black hole thermodynamics from topological perspective

J Sadeghi, SN Gashti, MR Alipour, MAS Afshar - Annals of Physics, 2023 - Elsevier
In this paper, we use the generalized off-shell Helmholtz free energy method to explore the
thermodynamic properties of Bardeen black holes (BD BHs) from a topological perspective …

Thermodynamic topology of black holes from bulk-boundary, extended, and restricted phase space perspectives

J Sadeghi, MAS Afshar, SN Gashti, MR Alipour - Annals of Physics, 2024 - Elsevier
In this article, we investigate the thermodynamic topology of some black holes, namely AdS
Reissner Nordstrom (R–N), AdS Einstein–Gauss–Bonnet (EGB), and AdS Einstein-power …

RPS thermodynamics of Taub–NUT AdS black holes in the presence of central charge and the weak gravity conjecture

J Sadeghi, M Shokri, SN Gashti, MR Alipour - General Relativity and …, 2022 - Springer
We study the thermodynamics of the Taub–NUT AdS black holes by Visser's holographic
method using AdS radius as a constant parameter under the restricted phase space …

Topological classification and black hole thermodynamics

MR Alipour, MAS Afshar, SN Gashti… - Physics of the Dark …, 2023 - Elsevier
One of the new methods that can be used to study the thermodynamics, critical points of a
system based on a topological approach is the study of topological charges using Duan's ϕ …

[HTML][HTML] Reissner-Nordström black holes surrounded by perfect fluid dark matter: Testing the viability of weak gravity conjecture and weak cosmic censorship …

J Sadeghi, SN Gashti - Physics Letters B, 2024 - Elsevier
A possible violation of the weak gravity conjecture (WGC) by cosmic censorship is one of the
major challenges in the field of general relativity. The cosmic censorship is a fundamental …

Pleasant behavior of swampland conjectures in the face of specific inflationary models

SN Gashti, J Sadeghi, B Pourhassan - Astroparticle Physics, 2022 - Elsevier
Recently researchers have been studying various conditions as swampland criteria in
cosmological implications. They have studied many inflation models with different …

Swampland dS conjecture in mimetic f (R, T) gravity

SN Gashti, J Sadeghi, S Upadhyay… - … in Theoretical Physics, 2022 - iopscience.iop.org
In this paper, we study a theory of gravity called mimetic f (R, T) in the presence of
swampland dS conjecture. For this purpose, we introduce several inflation solutions of the …

Two-field inflationary model and swampland de Sitter conjecture

SN Gashti - arXiv preprint arXiv:2111.06421, 2021 - arxiv.org
In this paper, we are going to investigate a new perspective of the two-field inflation model
with respect to the swampland dS conjecture. At the first step, we study the two-fields …

de Sitter swampland conjecture in string field inflation

J Sadeghi, B Pourhassan, SN Gashti, I Sakallı… - The European Physical …, 2023 - Springer
In this paper, we study a particular type of inflation by using non-local Friedman equations
that are derived from the zero levels of string field theory and express a tachyonic action …