42 citations · 234 across the 23 of their papers we have counts for
13 papers · 1 filter
Constraints of anisotropy on warm power-law inflation in light of Planck results
Zahra Ghadiri, Ali Aghamohammadi, Abdollah Refaei
In this article, we examine the effects of anisotropy on a model of canonical warm inflation with the power-law potential. The results of this model are compared to Planck satellit…
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…
Constraints on warm power-law inflation in light of Planck results
Zahra Ghadiri, Abdollah Refaei, Ali Aghamohammadi +1
The constraints on a general form of the power-law potential and the dissipation coefficient in the framework of warm single field inflation imposed by Planck data will be investig…
Hamilton-Jacobi formalism for inflation with non-minimal derivative coupling
Haidar Sheikhahmadi, Emmanuel N. Saridakis, Ali Aghamohammadi +1
In inflation with nonminimal derivative coupling there is not a conformal transformation to the Einstein frame where calculations are straightforward, and thus in order to extract…
Effects of low anisotropy on interacting holographic and new agegraphic scalar fields models of dark energy
Hossien Hossienkhani, Ali Aghamohammadi, S. W. Rabieei +1
A spatially homogeneous and anisotropic Bianchi type I universe is studied with the interacting holographic and new agegraphic scalar fields models of dark energy. Given, the frame…
Non-commutative and commutative vacua effects in a scalar torsion scenario
Haidar Sheikhahmadi, Ali Aghamohammadi, Khaled Saaidi
In this work, the effects of non-commutative and commutative vacua on the phase space generated by a scalar field in a scalar torsion scenario are investigated. For both classical…
Inflationary universe in the presence of a minimal measurable length
A. Mohammadi, Ahmed Farag Ali, T. Golanbari +3
In this paper, we will study the effect of having a minimum measurable length on inflationary cosmology. We will analyze the inflationary cosmology in the Jacobson approach. In thi…
Hamilton-Jacobi Formalism for Tachyon Inflation
A. Aghamohammadi, A. Mohammadi, T. Golanbari +1
Tachyon inflation is reconsidered by using the recent observational data obtained from Planck-2013 and BICEP2. The Hamilton-Jacobi formalism is picked out as a desirable approach i…
The effect of de Sitter like background on increasing the zero point budget of dark energy
Haidar Sheikhahmadi, Ali Aghamohammadi, Khaled Saaidi
During this work, using subtraction renormalization mechanism, zero point quantum fluctuations for bosonic scalar fields in a de-Sitter like background are investigated. By virtue…
Equivalence Principle (EP) and Solar System Constraints on model of Gravity
Kh. Saaidi, A. Aghamohammadi
Experiments on the violation of equivalence principle (EP) and solar system give a number of constraints in which any modified gravity model must satisfy them. We study these const…
Holographic dark energy with time depend gravitational constant in the non-flat Hoava-Lifshitz cosmology
Kh. Saaidi, A. Aghamohammadi, M. R. Setare
We study the holographic dark energy on the subject of Hoava-Lifshitz gravity with a time dependent gravitational constant (G(t)), in the non-flat space-time. We obtain…
Static Spherically Symmetric Solution of (R +- μ^4/R) Gravity
Kh. Saaidi, A. Vaji, A. Aghamomammadi
The static spherically symmetric solution for (R +- μ^4/R) model of f(R)gravity is investigated. We obtain the metric for space-time in the solar system that reduces to the Schwarz…
Strong and weak gravitational field in gravity
Kh. Saaidi, A. Vajdi, S. W. Rabiei +2
We introduce a new approach for investigating the weak field limit of vacuum field equations in gravity and we find the weak field limit of gravity. Furthermo…