48 citations · 92 across the 4 of their papers we have counts for
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gr-qc2019★ 40 cited
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…
gr-qc2019★ 2 cited
Time crystals in primordial perturbations
Hao-Hao Li, Yun-Song Piao
Cosmological time crystal (TC) corresponds to a matter state where the periodic motion of field forms a limit cycle in its phase space. We explore what would happen if it existed i…