187 citations · 2.2k across the 102 of their papers we have counts for
104 papers
Induced Multi-phase Inflation with Reheating: Leptogenesis and Dark Matter Production in Metric versus Palatini
Nilay Bostan, Rafid H. Dejrah, Anish Ghoshal +1
We study non-minimally coupled scalar-induced multi-phase inflation in metric and Palatini gravity, considering linear, Brans-Dicke-like, and Higgs-like sectors. The scalar spectra…
Inflation in the Scale Symmetric Standard Model and Weyl geometry
Z. Lalak, P. Michalak
This work explores the possibility of inflation in a scale-symmetric extension of the Standard Model Higgs sector, where the Higgs field is coupled to a singlet scalar, the d…
Post-inflationary production of particle Dark Matter: Hilltop and Coleman-Weinberg inflation
Anish Ghoshal, Maxim Yu. Khlopov, Zygmunt Lalak +1
We investigate the production of non-thermal dark matter (DM), , during post-inflationary reheating era. For inflation, we consider two slow roll single field inflationary scena…
Growth of curvature perturbations for PBH formation \& detectable GWs in non-minimal curvaton scenario revisited
Chao Chen, Anish Ghoshal, Zygmunt Lalak +2
We revisit the growth of curvature perturbations in non-minimal curvaton scenario with a non-trivial field metric where is an inflaton field, and incorporate the effect…
Measuring inflaton couplings via dark radiation as in CMB
Anish Ghoshal, Zygmunt Lalak, Shiladitya Porey
We study the production of a beyond the Standard Model (BSM) free-streaming relativistic particles which contribute to and investigate how much the predictions for the in…
Spontaneous scale symmetry breaking at high temperature
Zygmunt Lalak, Paulina Michalak
We consider a scale symmetric extension of the Standard Model Higgs scalar sector. The new sector, dilaton, is responsible for the generation of mass scales and may have geometric…