33 citations · 36 across the 4 of their papers we have counts for
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Distinguishing Coupled Dark Matter Dark Energy from Kinematic Phantom Crossing
Samit Ganguly, Koushik Dutta, Goutam Manna
Recent measurements of cosmic expansion have renewed interest in dark-energy scenarios in which the effective equation of state exhibits phantom-like evolution and may cross …
Production of Gravitational Waves from Preheating and Tachyonic Instabilities
Khursid Alam, Koushik Dutta, Ahamadullah Khan
We analyze GW production during preheating for an -attractor potential terminating in the positive-curvature regime, with energy transfer via . Linear Floquet analysis a…
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…
CMB Constraints on Natural Inflation with Gauge Field Production
Khursid Alam, Koushik Dutta, Nur Jaman
The natural inflation model with a periodic cosine potential is ruled out by recent Planck 2018 data for the decay constant . If the Planck data is combi…