40 citations · 359 across the 25 of their papers we have counts for
17 papers · 1 filter
Hamilton-Jacobi analysis of noncanonical inflation in gravity: Constraints from Planck/ACT data, and theoretical bounds
Z. Ossoulian, T. Golanbari, Kh. Saaidi
The latest CMB data from ACT DR6, combined with Planck, DESI, and BICEP/Keck, indicate a slight upward shift in the scalar spectral index, placing several previously favored inflat…
Tsallis holographic inflation in gravity: CMB constraints, reheating, and swampland implications
S. Taghavi, T. Golanbari, Kh. Saaidi
Understanding how early-universe inflation may emerge from generalized holographic energy densities within modified gravity motivates the present analysis. We develop a self-consis…
Null geodesic of Schwarzschild AdS with Gaussian matter distribution
Abolhassan Mohammadi, N. Doustimotlagh, Tayeb Golanbari +2
One of the best ways to understand the gravitation of a massive object is by studying the photon's motion around it. We study the null geodesic of a regular black hole in anti-de S…
Tsallis holographic dark energy for inflation
Abolhassan Mohammadi, Tayeb Golanbari, Kazuharu Bamba +1
The application of holographic principle in very early time is studied. The consideration of the principle in the late-time evolution will be a good motivation to study its role at…
Revisiting Scalar Tensor inflation by swampland criteria and Reheating
Abolhassan Mohammadi, Tayeb Golanbari, Jamil Enayati +2
The scenario of the slow-roll inflation is studied in the frame of the scalar-tensor theory of gravity where the scalar field has a non-minimal coupling to the geometric part. Afte…
Brane inflation: swampland criteria, TCC, and reheating predictions
Abolhassan Mohammadi, Tayeb Golanbari, Salah Nasri +1
We consider inflation in a five -dimensional space time with the inflaton field confined to live on a brane world. In this scenario, we study different types of potentials for the…
Brane Constant-roll Inflation
Abolhassan Mohammadi, Tayeb Golanbari, Salah Nasri +1
The scenario of constant-roll inflation in the frame of the RSII brane gravity model is considered. Based on the scenario, the smallness of the second slow-roll parameter is releas…
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…
Beta-function formalism for k-essence constant-roll inflation
Abolhassan Mohammadi, Tayeb Golanbari, Khaled Saaidi
The beta function formalism is being used to study the constant-roll inflation in the k-essence model. Assuming the second slow-roll parameter as a constant leads to a first-order…
Observational constraints on DBI constant-roll inflation
Abolhassan Mohammadi, Tayeb Golanbari, Khaled Saaidi
Using the constant-roll approach, DBI inflationary scenario will be studied and it is sought to compare the result with observational data. By considering the cosmological perturba…
Light of Planck-2015 on Non-Canonical Inflation
Kh. Saaidi, A. Mohammadi, T. Golanbari
Slow-roll inflationary scenario is considered in non-canonical scalar field model supposing a power-law function for kinetic term, and using two formalisms. In the first approach,…
Stability of a noncanonical scalar field model during cosmological date
Z. Ossoulian, T. Golanbari, H. Sheikhahmadi +1
Using the non-canonical model of scalar field, the cosmological consequences of a pervasive, self-interacting, homogeneous and rolling scalar field are studied. In this model, the…
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…
On the holographic dark energy in chameleon scalar-tensor cosmology
K. Saaidi, H. Sheikhahmadi, T. Golanbari +1
We study the holographic dark energy (HDE) model in generalized Brans-Dicke scenario with a non-minimal coupling between the scalar field and matter lagrangian namely Chameleon Bra…
Quark-hadron phase transition in DGP including BD brane
T. Haddad, T. Golanbari, A. Mohammadi +2
A DGP brane-world model with a perfect fluid brane matter including a Brans-Dicke (BD) scalar field on brane has been utilized to investigate the problem of the quark-hadron phase…
QCD phase transition with a power law chameleon scalar field in the bulk
T. Golanbari, A. Mohammadi, Kh. Saaidi
In this work, a brane world model with a perfect fluid on brane and a scalar field on bulk has been used to study quark-hadron phase transition. The bulk scalar field has an intera…