236 citations · 845 across the 21 of their papers we have counts for
4 papers · 1 filter
Trans-Planckian censorship of multistage inflation and dark energy
Hao-Hao Li, Gen Ye, Yong Cai +1
We explore the bound of the trans-Planckian censorship conjecture on an inflation model with multiple stages. We show that if the first inflationary stage is responsible for the pr…
Bounce in GR and higher-order derivative operators
Gen Ye, Yun-Song Piao
Recent progress seems to suggest that one must modify General Relativity (GR) to stably violate the null energy condition and avoid the cosmological singularity. However, with the…
Implication of GW170817 for cosmological bounces
Gen Ye, Yun-Song Piao
The detection of GW170817 and its electromagnetic counterpart has revealed the speed of gravitational waves coincides with the speed of light, . Inspired by the possibility…
Quantum decoherence of primordial perturbations through nonlinear scaler-tensor interaction
Gen Ye, Yun-Song Piao
Scaler and tensor perturbations couple nonlinearly with each other in the Einstein-Hilbert action. We show that such interaction naturally leads to the quantum decoherence of the p…