84 citations · 293 across the 23 of their papers we have counts for
9 papers · 1 filter
Geometric optics analysis in Lorentz violating Chern-Simons electrodynamics
Arpan Das, Hriditi Howlader, Alekha C. Nayak
We study the geometric optics limit of the electrodynamics in the presence of Lorentz violating Chern-Simons term in (3+1) dimensions. The Chern-Simons term couples the dual electr…
Bounds on sterile neutrino lifetime and mixing angle with active neutrinos by global 21 cm signal
Pravin Kumar Natwariya, Alekha C. Nayak
Sterile neutrinos can be a possible candidate for dark matter. Sterile neutrinos are radiatively unstable and can inject photon energy into the intergalactic medium (IGM). The inje…
Very special relativity induced phase in neutrino oscillation
Alekha C. Nayak
In Very Special Relativity (VSR), the neutrino mass term is coupled with the VSR preferred axis, and hence Lorentz violating in nature. Beyond standard model physics predicts neutr…
Confronting nuclear equation of state in the presence of dark matter using GW170817 observation in relativistic mean field theory approach
Arpan Das, Tuhin Malik, Alekha C. Nayak
We confront admixture of dark matter inside neutron star using gravitational wave constraints coming from binary neutron star merger. We consider a relativistic mean field model in…
Cosmological Dark Matter in a Conformal Model
Prasenjit Sanyal, Alekha C. Nayak, Gopal Kashyap +1
We study the collider, astrophysical and cosmological constraints on the dark matter sector of a conformal model within the framework of both the freeze out as well as the freeze i…
Phenomenological Implications of Very Special Relativity
Alekha C. Nayak, Pankaj Jain
We discuss several phenomenological implications of Very Special Relativity (VSR). It is assumed that there is a small violation of Lorentz invariance and the true symmetry group o…
Vector dark matter annihilation with internal bremsstrahlung
Gulab Bambhaniya, Jason Kumar, Danny Marfatia +2
We consider scenarios in which the annihilation of self-conjugate spin-1 dark matter to a Standard Model fermion-antifermion final state is chirality suppressed, but where this sup…
Effect of VSR invariant Chern-Simon Lagrangian on photon polarization
A. C. Nayak, R. K. Verma, P. Jain
We propose a generalization of the Chern-Simon (CS) Lagrangian which is invariant under the SIM(2) transformations but not under the full Lorentz group. We study the effect of such…
ELKO fermions as dark matter candidates
Bakul Agarwal, Pankaj Jain, Subhadip Mitra +2
We study the implications of the ELKO fermions as a cold dark matter candidate. Such fermions arise in theories that are not symmetric under the full Lorentz group. Although they d…