4 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…
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…