39 citations · 144 across the 8 of their papers we have counts for
8 papers
Primordial Stochastic Gravitational Wave Backgrounds from a Sharp Feature in Three-field Inflation II: The Inflationary Era
Vikas Aragam, Sonia Paban, Robert Rosati
We study the contribution of large scalar perturbations sourced by a sharp feature during cosmic inflation to the stochastic gravitational wave background (SGWB), extending our pre…
WarmSPy: a numerical study of cosmological perturbations in warm inflation
Gabriele Montefalcone, Vikas Aragam, Luca Visinelli +1
We present WarmSPy, a numerical code in Python designed to solve for the perturbations' equations in warm inflation models and compute the corresponding scalar power spectrum at CM…
Primordial Stochastic Gravitational Wave Backgrounds from a Sharp Feature in Three-field Inflation I: The Radiation Era
Vikas Aragam, Sonia Paban, Robert Rosati
The detection of a primordial stochastic gravitational wave background has the potential to reveal unprecedented insights into the early universe, and possibly into the dynamics of…
Observational Constraints on Warm Natural Inflation
Gabriele Montefalcone, Vikas Aragam, Luca Visinelli +1
Warm natural inflation is studied for the case of the original cosine potential. The radiation bath during inflation induces a dissipation (friction) rate in the equation of motion…
Constraints on the scalar-field potential in warm inflation
Gabriele Montefalcone, Vikas Aragam, Luca Visinelli +1
We quantify the degree of fine tuning required to achieve an observationally viable period of inflation in the strongly dissipative regime of warm inflation. The ``fine-tuning'' pa…
Rapid-turn inflation in supergravity is rare and tachyonic
Vikas Aragam, Roberta Chiovoloni, Sonia Paban +2
Strongly non-geodesic, or rapidly turning trajectories in multifield inflation have attracted much interest recently from both theoretical and phenomenological perspectives. Most m…
The Multi-Field, Rapid-Turn Inflationary Solution
Vikas Aragam, Sonia Paban, Robert Rosati
There are well-known criteria on the potential and field-space geometry for determining if slow-roll, slow-turn, multi-field inflation is possible. However, even though it has been…
Multi-field Inflation in High-Slope Potentials
Vikas Aragam, Sonia Paban, Robert Rosati
We present two families of multi-field potentials that support inflation while satisfying the refined de Sitter and the distance swampland conjectures. Both families feature Planck…