2 citations · 2 across the 4 of their papers we have counts for
5 papers
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…
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…
Non-thermal moduli production during preheating in -attractor inflation models
Khursid Alam, Mar Bastero-Gil, Koushik Dutta +1
Production of gravitationally coupled light moduli fields must be suppressed in the early universe, so that its decay products do not alter Big Bang Nucleosynthesis (BBN) predictio…
White dwarf mass-radius relation in theories beyond general relativity
Khursid Alam, Tousif Islam
We explore the internal structures of the white dwarfs in two different modified theories of gravity: (i) scalar-tensor-vector gravity and (ii) beyond Horndeski theories of t…
Effects of Reheating on Moduli Stabilization
Khursid Alam, Koushik Dutta
Moduli potential loses its minima due to external energy sources of inflaton energy density or radiation produced at the end of inflation. But, the non-existence of minima does not…