289 citations · 1.1k across the 38 of their papers we have counts for
38 papers
Transient Early Dark Energy-Like Dynamics as a Mechanism for Enhanced Early Structure Formation in the JWST Era
Abhik Bhattacharjee, Amlan Chakraborty, Subinoy Das +2
The discovery of massive galaxies at redshifts by the James Webb Space Telescope (JWST) has renewed interest in cosmological mechanisms capable of enhancing early stru…
Neutrino mass constraints in the context of 4-parameter dark energy equation of state and DESI DR2 observations
Gowri S Nair, Amlan Chakraborty, Luca Amendola +1
Cosmological constraints on the total neutrino mass, , are strongly shaped by assumptions about the dark-energy equation of state due to the well-known degeneracy between…
Forecasting Constraints on Non-Thermal Light Massive Relics from Future CMB Experiments (CMB-S4/Simons Observatory)
Arka Banerjee, Abhik Bhattacharjee, Subinoy Das +2
In this work we present Fisher forecasts on \textit{non-thermal LiMR} models for a CMB Stage IV-like experiment and the Simons Observatory -- particularly focusing on a model of in…
DESI results: Hint towards coupled dark matter and dark energy
Amlan Chakraborty, Prolay K. Chanda, Subinoy Das +1
We investigate a scenario where a dark energy quintessence field with positive kinetic energy is coupled with dark matter. With two different self-interaction potentials for th…
Cosmological constraints on mass-varying dark matter
Amlan Chakraborty, Anirban Das, Subinoy Das +1
As one of the fundamental unknowns of our Universe, the mass of dark matter remains to be a topic of great interest. We consider the possibility of a time-variation of the dark mat…
Early Dark Energy beyond slow-roll: implications for cosmic tensions
Ravi Kumar Sharma, Subinoy Das, Vivian Poulin
In this work, we explore the possibility that Early Dark Energy (EDE) is dynamical in nature and study its effect on cosmological observables. We introduce a parameterization of th…