3 papers
astro-ph.CO2026
Untangling PBH overproduction in -SIGWs generated by Pulsar Timing Arrays for MST-EFT of single field inflation
Sayantan Choudhury, Kritartha Dey, Ahaskar Karde
Our work highlights the crucial role played by the equation of state (EoS) parameter within the context of single field inflation with Multiple Sharp Transitions (MSTs) to unta…
astro-ph.CO2025
Negative non-Gaussianity as a salvager for PBHs with PTAs in bounce
Sayantan Choudhury, Kritartha Dey, Siddhant Ganguly +3
Non-Gaussianity in the primordial curvature perturbation is a crucial element of the early universe due to its significant impact on the primordial black hole (PBH) production. In…
astro-ph.CO2025
Primordial Black Holes from Effective Field Theory of Stochastic Single Field Inflation at NNNLO
Sayantan Choudhury, Ahaskar Karde, Pankaj Padiyar +1
We present a study of the Effective Field Theory (EFT) generalization of stochastic inflation in a model-independent single-field framework and its impact on primordial black hole…