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 …

[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 …

[HTML][HTML] 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 …

Refined swampland conjecture in warm vector hybrid inflationary scenario

SN Gashti, J Sadeghi - The European Physical Journal Plus, 2022 - Springer
In this paper, we want to study warm vector inflation from the framework of a hybrid scenario
in the face of refined swampland conjectures. First, we introduce the warm vector inflation …

Swampland conjecture and inflation model from brane perspective

J Sadeghi, B Pourhassan, SN Gashti… - Physica Scripta, 2021 - iopscience.iop.org
Over the past few decades, inflation models have been studied by researchers from different
perspectives and conditions in order to introduce a model for the expanding universe. In this …

Notes on further refining de Sitter swampland conjecture with inflationary models

J Sadeghi, SN Gashti, MR Alipour - Chinese Journal of Physics, 2022 - Elsevier
In this paper, we challenge some inflationary models with the recent new conjecture of the
swampland program, namely, further refining the de Sitter swampland conjecture. So far …

Further refining swampland dS conjecture in mimetic gravity

S Noori Gashti, J Sadeghi, MR Alipour - International Journal of …, 2023 - World Scientific
Mimetic gravity analysis has been studied as a theory in various types of general relativity
extensions, such as mimetic f (R) gravity, mimetic f (R, T) gravity, mimetic f (R, G) gravity, etc …