4 citations · 5 across the 4 of their papers we have counts for
6 papers · 1 filter
Reappraisal of the Constraints on Heavy Axion-like Particles from Gamma-Ray Bursts
Christopher V. Cappiello, Saurav Das, P. S. Bhupal Dev +2
We reassess existing limits and derive new constraints on heavy axion-like particle (ALP) coupling to photons using gamma-ray bursts (GRBs). ALPs can be produced in the hot dense f…
Adiabatic Conversion of ALPs into Dark Photon Dark Matter
Edward Broadberry, Saurav Das, Anson Hook +1
We introduce a mechanism by which a misaligned ALP can be dynamically converted into a dark photon in the presence of a background magnetic field. An abundance of non-relativistic…
Old neutron stars as a new probe of relic neutrinos and sterile neutrino dark matter
Saurav Das, P. S. Bhupal Dev, Takuya Okawa +1
We study the kinetic cooling (heating) of old neutron stars due to coherent scattering with relic neutrinos (sterile neutrino dark matter) via Standard Model neutral-current intera…
Constraining Vector Dark Matter with Neutrino experiments
Dawid Brzeminski, Saurav Das, Anson Hook +1
Vector Dark Matter (VDM) that couples to lepton flavor (, , ) acts similarly to a chemical potential for the neutrino flavor eigenstates and modifies neutrino oscill…
Black Hole Production of Monopoles in the Early Universe
Saurav Das, Anson Hook
In the early universe, evaporating black holes heat up the surrounding plasma and create a temperature profile around the black hole that can be more important than the black hole…
Non-linearly realized discrete symmetries
Saurav Das, Anson Hook
While non-linear realizations of continuous symmetries feature derivative interactions and have no potential, non-linear realizations of discrete symmetries feature non-derivative…