60 citations · 234 across the 20 of their papers we have counts for
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Late-time Entropy Production from Scalar Decay and Neutrino Decoupling
Paramita Adhya, D. Rai Chaudhuri
Late-time entropy production from scalar decay arises in scenarios like thermal inflation, proposed to dilute long-lived, massive fields like the gravitino and the moduli. The scal…
Entropy Production during Reheating at Late Times and Neutrino Decoupling
Paramita Adhya, D. Rai Chaudhuri
Small Recent theories have proposed a variety of massive particles, like the moduli, whose abundance or decay endangers standard cosmological results. To dilute them, thermal infla…
Decay and Decoupling of heavy Right-handed Majorana Neutrinos in the L-R model
Paramita Adhya, D. Rai Chaudhuri, Amitava Raychaudhuri
Heavy right-handed neutrinos are of current interest. The interactions and decay of such neutrinos determine their decoupling epoch during the evolution of the universe. This in tu…
Decoupling of Massive Right-handed Neutrinos
Paramita Adhya, D. Rai Chaudhuri
We investigate the effect of B+L - violating anomalous generation of massive right-handed neutrinos on their decoupling, when the right-handed neutrino mass is considerably greater…
Calculation of density fluctuation in inflationary epoch
Amit Kundu, S. Mallik, D. Rai Chaudhuri
Starting from an initial state of thermal equilibrium, we derive an expression for the quantum fluctuation in the energy density during the inflationary epoch in terms of the mode…
Density fluctuation in extended inflation
S. Mallik, D. Rai Chaudhuri
We examine the calculation of density perturbation at large scales in the inflationary scenario. The formula for its magnitude is reviewed from first principles and applied to the…