126 citations · 737 across the 22 of their papers we have counts for
21 papers
Dynamical system analysis in descending dark energy model
M. Shahalam, Sania Ayoub, Prakarshi Avlani +1
In this paper, we study the dynamical system analysis for a recently proposed decaying dark energy model, namely, Q-SC-CDM. First we investigate the stationary points to find the s…
Initial conditions of pre-inflation with Hilltop potential in loop quantum cosmology
M. Shahalam, Kuralay Yesmakhanova, Zhanar Umurzakhova
In this paper, we investigate the dynamics of pre-inflation with Hilltop potential in the framework of loop quantum cosmology. The initial conditions of inflaton field at the quant…
Dynamics of nonminimally coupled scalar field models with generic potentials in FLRW background
M. Shahalam, Shynaray Myrzakul
We study the phase space analysis of a nonminimally coupled scalar field model with different potentials such as KKLT, Higgs, inverse and inverse square. Our investigation brings n…
Revisiting pre-inflationary universe of family of attractor in loop quantum cosmology
M. Shahalam, Mudhahir Al Ajmi, R. Myrzakulov +1
In this work, we revisit the dynamics of pre-inflationary universe with a family of attractor potentials, in the framework of loop quantum cosmology, in which the big bang sing…
Late time evolution of a nonminimally coupled scalar field system
M. Shahalam, R. Myrzakulov, Maxim Yu. Khlopov
We revisit the dynamics of a nonminimally coupled scalar field model in case of coupling with , and the potentials , $V(ϕ)= V_0 e^{λϕ^…
Constraints on quintessence scalar field models using cosmological observations
Weiqiang Yang, M. Shahalam, Barun Pal +2
We consider a varieties of quintessence scalar field models in a homogeneous and isotropic geometry of the universe with zero spatial curvature aiming to provide stringent constrai…
Preinflationary dynamics of power-law potential in loop quantum cosmology
M. Shahalam
In this article, I mainly discuss the dynamics of the pre-inflationary Universe for the potential with in the context of loop quantum cosmology, in which…
Preinflationary dynamics in loop quantum cosmology: Monodromy Potential
Manabendra Sharma, M. Shahalam, Wu Qiang +1
In this article we explore the pre-inflationary background dynamics of an FLRW universe sourced by a scalar field with monodromy potential in LQC framework. In particular we calcul…
Preinflationary dynamics of attractor in loop quantum cosmology
M. Shahalam, M. Sami, Anzhong Wang
We systematically study the preinflationary dynamics of the spatially flat Friedmann-Lemaitre-Robertson-Walker universe filled with a single scalar field that has the generalized $…
Late-time acceleration with steep exponential potentials
M. Shahalam, Weiqiang Yang, R. Myrzakulov +1
In this letter, we study the cosmological dynamics of steeper potential than exponential. Our analysis shows that a simple extension of an exponential potential allows to capture l…
Cosmic acceleration from coupling of baryonic and dark matter components: Analysis and diagnostics
Abhineet Agarwal, R. Myrzakulov, S. K. J. Pacif +1
In this paper, we examine a scenario in which late-time cosmic acceleration might arise due to the coupling between baryonic matter and dark matter without the presence of extra de…
Pre-inflationary dynamics in loop quantum cosmology: Power-law potentials
M. Shahalam, Manabendra Sharma, Qiang Wu +1
In this paper, we study the pre-inflationary dynamics for the power-law potential with in the framework of loop quantum cosmology. In the case where the…
Dynamics of coupled phantom and tachyon fields
M. Shahalam, S. D. Pathak, Shiyuan Li +2
In this paper, we apply the dynamical analysis to a coupled phantom field with scaling potential taking particular forms of the coupling (linear and combination of linear), and pre…
Observational constraints on the generalized attractor model
M. Shahalam, Ratbay Myrzakulov, Shynaray Myrzakul +1
We study the generalized attractor model in the context of the late time cosmic acceleration. The model interpolates between the scaling freezing and thawing dark energy models…
Galileons, phantom fields, and the fate of the Universe
M. Shahalam, S. K. J. Pacif, R. Myrzakulov
In this paper we study cosmological dynamics of phantom as well as non-phantom fields with linear potential in presence of Galileon correction . We…
Dynamics of interacting quintessence
M. Shahalam, S. D. Pathak, M. M. Verma +2
In this paper, we investigate coupled quintessence with scaling potential assuming specific forms of the coupling as namely, , and $σ(\dot{ρ_m}+\dot{ρ_…
diagnostic applied to scalar field models and slowing down of cosmic acceleration
M. Shahalam, Sasha Sami, Abhineet Agarwal
We apply the diagnostic to models for dark energy based on scalar fields. In case of the power law potentials, we demonstrate the possibility of slowing down the expansion of…
Light mass galileon and late time acceleration of the Universe
R. Myrzakulov, M. Shahalam
We study Galileon scalar field model by considering the lowest order Galileon term in the lagrangian, by invoking a field potential. We use Statefinder hie…
Constraints on cosmological parameters in power-law cosmology
Sarita Rani, A. Altaibayeva, M. Shahalam +2
In this paper, we examine observational constraints on the power law cosmology; essentially dependent on two parameters (Hubble constant) and (deceleration parameter). We…
Statefinder hierarchy of bimetric and galileon models for concordance cosmology
R. Myrzakulov, M. Shahalam
In this paper, we use Statefinder hierarchy method to distinguish between bimetric theory of massive gravity, galileon modified gravity and DGP models applied to late time expansio…
Cosmological dynamics of non-minimally coupled scalar field system and its late time cosmic relevance
M. Sami, M. Shahalam, M. Skugoreva +1
We investigate the cosmological dynamics of non-minimally coupled scalar field system described by coupling with () and the field potential, $V(ϕ)=V_…