359 citations · 2k across the 45 of their papers we have counts for
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Inflationary trispectrum of gauge fields from scalar and tensor exchanges
P. Jishnu Sai, S. R. Haridev, Rajeev Kumar Jain
In this paper, we compute the inflationary trispectrum of primordial gauge fields generated through the scalar and tensor exchanges in models with spectator gauge fields whi…
Inflationary cross-correlations of a non-minimal spectator and their soft limits
P. Jishnu Sai, Rajeev Kumar Jain
Light spectator fields may not be dynamically relevant for the inflationary phase of the early universe, but they can still induce interesting imprints on cosmological observables.…
On the primordial correlation of gravitons with gauge fields
Rajeev Kumar Jain, P. Jishnu Sai, Martin S. Sloth
We calculate the primordial correlation of gravitons with an abelian gauge field non-minimally coupled through a dynamical dilaton field or a volume moduli during inflation in the…
Radiative Corrections from Heavy Fast-Roll Fields during Inflation
Rajeev Kumar Jain, McCullen Sandora, Martin S. Sloth
We investigate radiative corrections to the inflaton potential from heavy fields undergoing a fast-roll phase transition. We find that a logarithmic one-loop correction to the infl…
Non-Gravitating Scalar Field in the FRW Background
Nabamita Banerjee, Rajeev Kumar Jain, Dileep P. Jatkar
We study interacting scalar field theory non-minimally coupled to gravity in the FRW background. We show that for a specific choice of interaction terms, the energy-momentum tensor…