64 citations · 318 across the 32 of their papers we have counts for
5 papers · 1 filter
Postsphaleron darkogenesis
Sudhakantha Girmohanta, Yuichiro Nakai, Zhihao Zhang
A supercooled phase transition in a nearly conformal dark sector can provide a natural setting for darkogenesis via its out-of-equilibrium dynamics, where a particle-antiparticle n…
Implications of DESI for Dark Matter & Cosmic Birefringence
Basabendu Barman, Sudhakantha Girmohanta
We explore an interacting dark matter (DM)-dark energy (DE) framework that naturally yields an effective dynamical DE equation of state crossing the phantom barrier at early times,…
Quest for a phenomenologically consistent low cutoff theory
Sudhakantha Girmohanta, Yu-Cheng Qiu
The Randall-Sundrum model with the Higgs localized on the IR brane solves the gauge hierarchy problem. However, the associated low cutoff ( TeV) generically leads to unac…
Interplay of ALP Couplings at a Muon Collider
So Chigusa, Sudhakantha Girmohanta, Yuichiro Nakai +1
Axion-like particles can couple to Standard Model gluons, electroweak gauge bosons, and massive fermions. A future multi-TeV muon collider provides a favorable environment to probe…
Multi-Messenger and Cosmological Constraints on Dark Matter through Two-Fluid Neutron Star Modeling
Ankit Kumar, Sudhakantha Girmohanta, Hajime Sotani
In this study, we investigate the impact of dark matter (DM) on neutron stars (NSs) using a two-fluid formalism that treats nuclear matter (NM) and DM as gravitationally coupled co…