Evading no-go for PBH formation and production of SIGWs using Multiple Sharp Transitions in EFT of single field inflation

Abstract

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 Gravitational Waves (SIGWs) by incorporating one-loop corrected renormalized-resummed scalar power spectrum. With effective sound speed parameter, $1\le c_s\le 1.17$, the direct consequence is the generation of PBH masses spanning $M_{\mathrm{PBH}}\sim \mathcal{O}(10^{-31}{M}_{\odot }-10^4{M}_{\odot })$, thus evading well known \textit{No-go theorem} on PBH mass. Our results align coherently with the extensive NANOGrav 15-year data and the sensitivities outlined by other terrestrial and space-based experiments (e.g.: LISA, HLVK, BBO, HLV(O3), etc.).

15 pages, 3 figures, Reference updated, Comments are welcome, Accepted for publication in Physics of the Dark Universe

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• Numerical 1-loop correction from a potential yielding ultra-slow-roll dynamics
• Realisation of the ultra-slow roll phase in Galileon inflation and PBH overproduction
• Large fluctuations and Primordial Black Holes
• Obviating PBH overproduction for SIGWs generated by Pulsar Timing Arrays in loop corrected EFT of bounce
• Regularized-Renormalized-Resummed loop corrected power spectrum of non-singular bounce with Primordial Black Hole formation
• Untangling PBH overproduction in $w$-SIGWs generated by Pulsar Timing Arrays for MST-EFT of single field inflation
• Primordial regular black holes as all the dark matter. III. Covariant canonical quantum gravity models
• Primordial Black Holes from Effective Field Theory of Stochastic Single Field Inflation at NNNLO
• Constraining the impact of standard model phase transitions on primordial black holes
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• Detecting the dark sector through scalar-induced gravitational waves
• Primordial black holes in SB SUSY Gauss-Bonnet inflation
• Stochastic origin of primordial fluctuations in the Sky
• Scalar-induced gravitational waves in spatially covariant gravity
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