7 papers · 1 filter
Gravitational Wave Signatures from Domain Wall and Strong First-Order Phase Transitions in a Two Complex Scalar extension of the Standard Model
Avik Paul, Upala Mukhopadhyay, Debasish Majumdar
We consider a simple extension of Standard Model by adding two complex singlet scalars with a symmetry. A discrete $\mathcal{Z}_2 \times \mathcal{Z}^{\prime}…
Gravitational Wave Emissions from First Order Phase Transitions with Two Component FIMP Dark Matter
Madhurima Pandey, Avik Paul
We explore the emissions of the Gravitational Waves (GWs) from a strong first-order ekectroweak phase transition. To this end, a dark matter model has been investigated in Feebly I…
Singlet-Doublet Fermionic Dark Matter and Gravitational Wave in Two Higgs Doublet Extension of the Standard Model
Basabendu Barman, Amit Dutta Banik, Avik Paul
We present a study of singlet-doublet vector-like leptonic dark matter (DM) in the framework of two Higgs doublet model (2HDM), where the dark sector is comprised of one doublet an…
Gravitational wave signatures from an extended inert doublet dark matter model
Avik Paul, Biswajit Banerjee, Debasish Majumdar
We consider a particle dark matter model by extending the scalar sector of the Standard Model by an additional SU(2) scalar doublet which is made "inert" (and stable) by imposing a…
Cooling of Dark-Matter Admixed Neutron Stars with density-dependent Equation of State
Sajad A. Bhat, Avik Paul
We propose a dark-matter (DM) admixed density-dependent equation of state where the fermionic DM interacts with the nucleons via Higgs portal. Presence of DM can hardly influence t…
Signatures of Synchrotron Radiation from the Annihilation of Dark Matter at the Galactic Centre
Avik Paul, Debasish Majumdar, Amit Dutta Banik
We propose a fermionic dark matter model by extending Standard Model with a Dirac fermion and a real pseudoscalar. The fermion dark matter particle interacts with the Standard Mode…