42 citations · 129 across the 14 of their papers we have counts for
15 papers
Multi-Parameter Transitions in Cosmological Calibrators: A Resolution to the Hubble Tension from SH0ES Data Analysis
Mohit K. Sharma
The Hubble tension, characterized by discrepant measurements of the Hubble constant from early and late universe probes, remains one of the most significant challenges in cosmology…
Reconciling Early and Late Time Tensions with Reinforcement Learning
Mohit K. Sharma, M. Sami
We study the possibility of accommodating both early and late-time tensions using a novel reinforcement learning technique. By applying this technique, we aim to optimize the evolu…
Generic Predictions for Primordial Perturbations and their implications
Mohit K. Sharma, M. Sami, David F. Mota
We introduce a novel framework for studying small-scale primordial perturbations and their cosmological implications. The framework uses a deep reinforcement learning to generate s…
Phantom dark energy as a natural selection of evolutionary processes and cosmological tensions
Mayukh R. Gangopadhyay, M. Sami, Mohit K. Sharma
We study the late-time cosmological tensions using the low-redshift background and redshift-space distortion data by employing a machine learning (ML) technique. By comparing the g…
Generic modification of gravity, late time acceleration and Hubble tension
Mayukh R. Gangopadhyay, Shibesh K. Jas Pacif, M. Sami +1
We consider a scenario of large-scale modification of gravity that does not invoke extra degrees of freedom but includes coupling between baryonic matter and dark matter in the Ein…
Composite pseudo Nambu Goldstone Quintessence
Mayukh R. Gangopadhyay, Nilanjana Kumar, Ankan Mukherjee +1
A pseudo-Nambu Goldstone Boson (pNGB) arising from the breaking of a global symmetry () can be one of the most promising candidates for the quintessence model, to e…
The Oscillatory Universe, phantom crossing and the Hubble tension
Mohit K. Sharma, Shibesh Kumar Jas Pacif, Gulmira Yergaliyeva +1
We investigate the validity of cosmological models with an oscillating scale factor in relation to late-time cosmological observations. We show that these models not only meet the…
Dynamical system analysis of interacting dark energy-matter scenarios at the linearized inhomogeneous level
Mohit Kumar Sharma, Sourav Sur
We carry out the dynamical system analysis of interacting dark energy-matter scenarios by examining the critical points and stability for not just the background level cosmological…
Imprints of interacting dark energy on cosmological perturbations
Mohit Kumar Sharma, Sourav Sur
We investigate the characteristic modifications in the evolving cosmological perturbations when dark energy interacts with dust-like matter, causing the latter's background energy…
Observational constraints on the massive neutrinos induced late-time cosmic acceleration
Mohit K. Sharma, Shibesh Kumar Jas Pacif, Shynaray Myrzakul +1
We study a scenario based upon a mass-less theory coupled to massive neutrino matter with symmetry using a conformal coupling, …
Late time acceleration due to generic modification of gravity and Hubble tension
Shahnawaz A. Adil, Mayukh R. Gangopadhyay, M. Sami +1
We consider a scenario of modified gravity, which is generic to late-time acceleration, namely, acceleration in the Jordan frame and no acceleration in the Einstein frame. The poss…
On the quantum origin of a dark universe
Saurya Das, Mohit Kumar Sharma, Sourav Sur
It has been shown beyond reasonable doubt that the majority (about 95%) of the total energy budget of the universe is given by the dark components, namely Dark Matter and Dark Ener…
Growth of matter perturbations in an interacting dark energy scenario emerging from metric-scalar-torsion couplings
Mohit Kumar Sharma, Sourav Sur
We study the growth of linear matter density perturbations in a modified gravity approach of scalar field couplings with metric and torsion. In the equivalent scalar-tensor formula…
A paradigm of warm quintessential inflation and production of relic gravity waves
Mayukh R. Gangopadhyay, Shynaray Myrzakul, Mohammad Sami +1
We consider the framework of quintessential inflation in the warm background which is caused by the dissipation of the scalar field energy density into relativistic degrees of free…
Curvaton: Perturbations and reheating
Mohit Kumar Sharma, Kairat Myrzakulov, Mudhahir Al Ajmi
We study chaotic and runaway potential inflationary models in the curvaton scenario. In particular, we address the issue of large tensor-to-scalar ratio and red-tilted spectrum in…