11 citations · 26 across the 4 of their papers we have counts for
12 papers
Warm inflation with non-comoving scalar field and radiation fluid
Tiberiu Harko, Haidar Sheikhahmadi
We consider a warm inflationary scenario in which the two dominant matter components present in the early Universe, the scalar field, and the radiation fluid, evolve with different…
Inflation in String Field Theory
Haidar Sheikhahmadi, Mir Faizal, Ali Aghamohammadi +2
In this paper, we analyze the inflationary cosmology using string field theory. This is done by using the zero level contribution from string field theory, which is a non-local tac…
Irreversible thermodynamical description of warm inflationary cosmological models
Tiberiu Harko, Haidar Sheikhahmadi
We investigate the interaction between scalar fields and radiation in the framework of warm inflationary models by using the irreversible thermodynamics of open systems with matter…
An exact solution for a force-free field electrodynamics accretion disk surrounding a perturbed charged black hole
Haidar Sheikhahmadi
Recently the first real image of the supermassive black hole at the heart of the galaxy M87 successfully has been captured. To explain the behavior of both the observed powerful je…
Warm Tachyon Inflation and Swampland Criteria
Abolhassan Mohammadi, Tayeb Golanbari, Haidar Sheikhahmadi +4
The scenario of two components warm tachyon inflation is considered where the tachyon field plays the role of inflaton and drives inflation. During inflation, the tachyon scalar fi…
Constraining chameleon field driven warm inflation with Planck 2018 data
Haidar Sheikhahmadi, Abolhassan Mohammadi, Ali Aghamohammadi +5
We investigate warm inflationary scenario in which the accelerated expansion of the early Universe is driven by chameleon-like scalar fields. Due to the non-minimal coupling betwee…