161 citations · 305 across the 14 of their papers we have counts for
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Could PBHs and secondary GWs have originated from squeezed initial states?
H. V. Ragavendra, L. Sriramkumar, Joseph Silk
[Abridged] Recently, the production of primordial black holes (PBHs) and secondary gravitational waves (GWs) due to enhanced scalar power on small scales have garnered considerable…
PBHs and secondary GWs from ultra slow roll and punctuated inflation
H. V. Ragavendra, Pankaj Saha, L. Sriramkumar +1
[Abridged] The primordial scalar power spectrum is well constrained on large scales, primarily by the observations of the anisotropies in the cosmic microwave background (CMB). Ove…
Suppression of scalar power on large scales and associated bispectra
H. V. Ragavendra, Debika Chowdhury, L. Sriramkumar
[Abridged] A sharp cut-off in the primordial scalar power spectrum on large scales has been known to improve the fit to the cosmic microwave background (CMB) data when compared to…