55 citations · 121 across the 4 of their papers we have counts for
4 papers
On the non-Gaussian correlation of the primordial curvature perturbation with vector fields
Rajeev Kumar Jain, Martin S. Sloth
We compute the three-point cross-correlation function of the primordial curvature perturbation generated during inflation with two powers of a vector field in a model where conform…
Cosmological Ohm's law and dynamics of non-minimal electromagnetism
Lukas Hollenstein, Rajeev Kumar Jain, Federico R. Urban
The origin of large-scale magnetic fields in cosmic structures and the intergalactic medium is still poorly understood. We explore the effects of non-minimal couplings of electroma…
On the evolution of tachyonic perturbations at super-Hubble scales
Rajeev Kumar Jain, Pravabati Chingangbam, L. Sriramkumar
In the slow-roll inflationary scenario, the amplitude of the curvature perturbations approaches a constant value soon after the modes leave the Hubble radius. However, relatively r…
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…