53 citations · 124 across the 8 of their papers we have counts for
6 papers · 1 filter
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…
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…
Impact of nonlinear overdensity statistics on primordial black hole abundance
Rafid Mahbub
It has been recently established that, if the nonlinear relationship between the overdensity perturbations and the curvature perturbations are taken into account, non-Gaussianity i…
Primordial black hole formation in inflationary -attractor models
Rafid Mahbub
The formation of primordial black holes is studied using superconformal inflationary -attractors. An inflaton potential is constructed with a plateau-like region which brings ab…