2 citations · 5 across the 5 of their papers we have counts for
3 papers · 1 filter
Gravitational waves from super-Hubble bubbles
Pulkit S. Ghoderao, Arttu Rajantie, Danièle Steer
We consider a cosmological first-order phase transition in which bubbles of true vacuum nucleate during inflation but do not collide and percolate until the Universe has entered th…
Curvature perturbations from vacuum transition during inflation
Björn Garbrecht, Pulkit S. Ghoderao, Arttu Rajantie
We demonstrate that in the presence of a light scalar spectator field, vacuum transitions taking place during inflation can produce large, potentially detectable non-Gaussian signa…
Curvature perturbations from preheating with scale dependence
Pulkit S. Ghoderao, Arttu Rajantie
We extend the formalism to calculate non-Gaussianity of primordial curvature perturbations produced by preheating in the presence of a light scalar field. The calculation is carrie…