125 citations · 1.2k across the 50 of their papers we have counts for
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MeV to multi-TeV thermal WIMPs: most conservative limits
Koushik Dutta, Avirup Ghosh, Arpan Kar +1
We consider a weakly interacting massive particle (WIMP) dark matter (DM) annihilating into all possible Standard Model (SM) particle pairs, including the SM neutrinos, via -wav…
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…
A general study of decaying scalar dark matter: existing limits and projected radio signals at the SKA
Koushik Dutta, Avirup Ghosh, Arpan Kar +1
We consider a decaying scalar dark matter (DM) with mass in the range 10 GeV - 10 TeV and vary the branching ratios of all possible two-body SM final states (excluding and in…
Decaying fermionic warm dark matter and XENON1T electronic recoil excess
Koushik Dutta, Avirup Ghosh, Arpan Kar +1
In the light of the recently observed XENON1T electronic recoil (ER) data, we investigate the possibility of constraining the parameter space of a generic fermionic warm dark matte…
Constraints on Kähler moduli inflation from reheating
Sukannya Bhattacharya, Koushik Dutta, Anshuman Maharana
We present predictions of the Kähler moduli inflation model for the spectral tilt by parametrising the reheating epoch by an effective equation-of-state parameter and the number of…
Supergravity Contributions to Inflation in models with non-minimal coupling to gravity
Kumar Das, Valerie Domcke, Koushik Dutta
This paper provides a systematic study of supergravity contributions relevant for inflationary model building in Jordan frame supergravity. In this framework, canonical kinetic ter…