3 papers
hep-ph2026
Probing freeze-in dark matter using Bose-Einstein condensate in neutron star
Deep Ghosh, Anirban Das
Neutron star (NS) is one of the most promising astrophysical targets to probe non-gravitational interaction of dark matter (DM) with visible matter. Their compactness makes them an…
astro-ph.CO2023
Mass varying dark matter and its cosmological signature
Anirban Das, Subinoy Das, Shiv K. Sethi
Nontrivial dark sector physics continues to be an interesting avenue in our quest to the nature of dark matter. In this paper, we study the cosmological signatures of mass-varying…
astro-ph.CO2023
The magnificent ACT of flavor-specific neutrino self-interaction
Anirban Das, Subhajit Ghosh
We revisit the cosmology of neutrino self-interaction and use the latest cosmic microwave background data from the Atacama Cosmology Telescope (ACT) and the Planck experiment to co…