99 citations · 225 across the 4 of their papers we have counts for
6 papers
Production of gravitational waves during preheating in the Starobinsky inflationary model
Guoqiang Jin, Chengjie Fu, Puxun Wu +1
The production of GWs during preheating in the Starobinsky model with a nonminimally coupled auxiliary scalar field is studied through the lattice simulation in this paper. We find…
Primordial black holes and oscillating gravitational waves in slow-roll and slow-climb inflation with an intermediate non-inflationary phase
Chengjie Fu, Puxun Wu, Hongwei Yu
We propose a new single field inflation model in which the usual slow-roll inflation is joined to a new period of slow-climb and slow-roll inflation through a short intermediate no…
Scalar induced gravitational waves in inflation with gravitationally enhanced friction
Chengjie Fu, Puxun Wu, Hongwei Yu
We study the scalar induced gravitational wave (GW) background in inflation with gravitationally enhanced friction (GEF). The GEF mechanism, which is realized by assuming a nonmini…
Primordial Black Holes from Inflation with Nonminimal Derivative Coupling
Chengjie Fu, Puxun Wu, Hongwei Yu
We propose a novel enhancement mechanism of the curvature perturbations in the nonminimal derivative coupling inflation model with a coupling parameter related to the inflaton fiel…
Nonlinear preheating with nonminimally coupled scalar fields in the Starobinsky model
Chengjie Fu, Puxun Wu, Hongwei Yu
We study the preheating after inflation in the Starobinsky model with a nonminimally coupled scalar field . Using the lattice simulation, we analyze the rescattering between the…
Inflationary dynamics and preheating of the non-minimally coupled inflaton field in the metric and Palatini formalisms
Chengjie Fu, Puxun Wu, Hongwei Yu
The inflationary dynamics and preheating in a model with a non-minimally coupled inflaton field in the metric and Palatini formalisms are studied in this paper. We find that in bot…