40 citations · 359 across the 25 of their papers we have counts for
26 papers
New Barrow holographic dark energy: cosmological dynamics and cosmic chronometer analysis
Omid Azarakhsh, Tayeb Golanbari, Behrooz Malekolkalami +1
We formulate new Barrow holographic dark energy (NBHDE) as a second-order expansion of the Barrow entropy correction near the standard holographic dark energy (HDE) limit, adopting…
Barrow Holographic Dark Energy with a Ricci Cutoff in Power-Law Gravity: Late-Time Cosmological Dynamics
S. Tavakoli, T. Golanbari, B. Malekolkalami +1
We investigate late-time Barrow holographic dark energy (BHDE) with Ricci cutoff in gravity. The term modifies the symmetric-teleparallel geometry, whi…
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…
Brane inflation and Trans-Planckian censorship conjecture
Abolhassan Mohammadi, Tayeb Golanbari, Jamil Enayati
The constraint of trans-Planckian censorship conjecture on brane inflation model is considered. The conjectures put an upper bound on the main parameter including temperature, infl…
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…
Renyi entropy and the holographic dark energy in flat space time
Tayeb Golanbari, Khaled Saaidi, Parvin Karimi
Based on Renyi entropy, we study the entropy corrected version of the holographic dark energy (HDE) model in apparent horizon of spatially flat FLRW universe. Applying the generali…
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…
Tachyon constant-roll inflation
A. Mohammadi, Kh. Saaidi, T. Golanbari
The constant-roll inflation is studied where the inflaton is taken as a tachyon field. Since in this approach the second slow-roll parameter is assumed to be of order one instead o…
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…
Brane inflation driven by noncanonical scalar field
T. Golanbari, A. Mohammadi, Kh. Saaidi
In this work, we are going to study the inflationary era of the Universe evolution by using second type of Randall-Sundrum model (RS-II) braneworld gravity. It is supposed that the…
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 Brane Gravity with Bulk Scalar Field
T. Golanbari, A. Mohammadi, Kh. Saaidi
A DGP brane-world framework is picked out to study quark-hadron phase transition problem. The model also includes a bulk scalar field in agreement with string theory prediction. Th…
Effect of an external interaction mechanism in solving agegraphic dark energy problems
A. Aghamohammadi, Kh. Saaidi, A. Mohammadi +3
Agegraphic dark energy(ADE) and New-ADE models have been introduced as two candidates for dark energy to explain the accelerated expansion phase of the Universe. In spite of a few…
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…