7 papers
Constraining Gravitational Waves from Superconducting Cosmic Strings with the Dark Ages -cm Signal
Adeela Afzal
Superconducting cosmic strings (SCSs) are characterized by three parameters: the dimensionless string tension , the current amplitude , and the vector coupling, …
Freeze-In Dark Matter and Leptogenesis: a SM route
Adeela Afzal, Rishav Roshan
We investigate the possibility of \emph{freeze-in} dark matter production and baryogenesis via leptogenesis in a SM model, which is an extension of the Standard Model, f…
Gravitational Waves from Strings in a Neutrino Mass Model
Adeela Afzal
In this work, we propose a novel realization of cosmic strings arising from the spontaneous breaking of an extended gauge symmetry in t…
Supersymmetric hybrid inflation and current-carrying metastable cosmic strings in
Adeela Afzal, Maria Mehmood, Mansoor Ur Rehman +1
We construct a realistic supersymmetric model for superheavy metastable cosmic strings (CSs) that can be investigated in the current pulsar timing array (PTA) experiments. It is ba…
Cosmic Strings-induced CMB anisotropies in light of Weighted Morphology
Adeela Afzal, M. Alakhras, M. H. Jalali Kanafi +1
Motivated by the morphological measures in assessing the geometrical and topological properties of a generic cosmological stochastic field, we propose an extension of the weighted…
Primordial Black Holes and Scalar-induced Gravitational Waves in Sneutrino Hybrid Inflation
Adeela Afzal, Anish Ghoshal, Stephen F. King
We investigate the possibility that primordial black holes (PBHs) can be formed from large curvature perturbations generated during the waterfall phase transition in a supersymmetr…