48 citations · 246 across the 9 of their papers we have counts for
9 papers
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…
Regularized-Renormalized-Resummed loop corrected power spectrum of non-singular bounce with Primordial Black Hole formation
Sayantan Choudhury, Ahaskar Karde, Sudhakar Panda +1
We present a complete and consistent exposition of the regularization, renormalization, and resummation procedures in the setup of having a contraction and then non-singular bounce…
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…
Realisation of the ultra-slow roll phase in Galileon inflation and PBH overproduction
Sayantan Choudhury, Ahaskar Karde, Sudhakar Panda +1
We demonstrate the explicit realisation of the ultra-slow roll phase in the framework of the effective field theory of single-field Galileon inflation. The pulsar timing array (PTA…
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…
Primordial non-Gaussianity as a saviour for PBH overproduction in SIGWs generated by Pulsar Timing Arrays for Galileon inflation
Sayantan Choudhury, Kritartha Dey, Ahaskar Karde +2
We investigate the explicit role of negative local non-Gaussianity, , in suppressing the abundance of primordial black holes (PBHs) in the single-field model of Galileo…
Evading no-go for PBH formation and production of SIGWs using Multiple Sharp Transitions in EFT of single field inflation
Gourab Bhattacharya, Sayantan Choudhury, Kritartha Dey +3
Deploying \textit{multiple sharp transitions} (MSTs) under a unified framework, we investigate the formation of Primordial Black Holes (PBHs) and the production of Scalar Induced G…
Scalar induced gravity waves from ultra slow-roll Galileon inflation
Sayantan Choudhury, Ahaskar Karde, Sudhakar Panda +1
We consider the production of secondary gravity waves in Galileon inflation with an ultra-slow roll (USR) phase and show that the spectrum of scalar-induced gravitational waves (SI…
Primordial non-Gaussianity from ultra slow-roll Galileon inflation
Sayantan Choudhury, Ahaskar Karde, Sudhakar Panda +1
We present a detailed study of the generation of large primordial non-Gaussianities during the slow-roll (SR) to ultra-slow roll (USR) transitions in the framework of Galileon infl…