PBH formation in EFT of single field inflation with sharp transition
Choudhury S. Panda S. Sami M.
10 October 2023Elsevier B.V.
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
2023#845
Using the Effective Field Theory (EFT) framework of single field inflation, we investigate the possibility of the formation of Primordial Black Holes (PBHs) in the Slow Roll (SR) to Ultra Slow Roll (USR) sharp transition. We demonstrate that, due to one-loop correction to the power spectrum, causality is violated (cs>1) for the mass range of PBHs, MPBH>102gm created during the said transition. We find that non-canonical features with cs<1 worsen the predictions of the canonical framework of single-field inflation.
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Centre For Cosmology and Science Popularization (CCSP), SGT University, Gurugram, Haryana, Delhi - NCR, 122505, India
School of Physical Sciences, National Institute of Science Education and Research, Odisha, Bhubaneswar, 752050, India
Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400085, India
Center for Theoretical Physics, Eurasian National University, Astana, 010008, Kazakhstan
Chinese Academy of Sciences, 52 Sanlihe Rd, Xicheng District, Beijing, China
Centre For Cosmology and Science Popularization (CCSP)
School of Physical Sciences
Homi Bhabha National Institute
Center for Theoretical Physics
Chinese Academy of Sciences
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