53 citations · 124 across the 8 of their papers we have counts for
8 papers
Formation and decay of oscillons after inflation in the presence of an external coupling, Part-I: Lattice simulations
Mohammed Shafi, Edmund J. Copeland, Rafid Mahbub +2
We investigate the formation and decay of oscillons during the post-inflationary reheating epoch from inflaton oscillations around asymptotically flat potentials in the pres…
Oscillon formation from preheating in asymmetric inflationary potentials
Rafid Mahbub, Swagat S. Mishra
We investigate the possibility of oscillon formation during the preheating phase of asymmetric inflationary potentials. We analytically establish the existence of oscillon-like sol…
Smooth coarse-graining and colored noise dynamics in stochastic inflation
Rafid Mahbub, Aritra De
We consider stochastic inflation coarse-grained using a general class of exponential filters. Such a coarse-graining prescription gives rise to inflaton-Langevin equations sourced…
Gravitational Instabilities of Uniform Black Strings in AdS
Aditya Dhumuntarao, Rafid Mahbub
Locally AdS uniform black strings (UBS) in the presence of a massless scalar field are believed to avoid the onset of the Gregory-Laflamme (GL) instability…
Primordial black hole formation in -attractor models: an analysis using optimized peaks theory
Rafid Mahbub
In this paper, the formation of primordial black holes (PBHs) is reinvestigated using inflationary -attractors. Instead of using the conventional Press-Schechter theory to compu…
Numerically modeling stochastic inflation in slow-roll and beyond
Aritra De, Rafid Mahbub
We present a complete numerical treatment of inflationary dynamics under the influence of stochastic corrections from sub-Hubble modes. We discuss how to exactly model the stochast…