155 citations · 1.2k across the 32 of their papers we have counts for
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astro-ph.CO2024★ 5 cited
Parity-violating primordial gravitational waves from null energy condition violation
Zi-Wei Jiang, Yong Cai, Fei Wang +1
We investigate the parity-violating effects in primordial gravitational waves (GWs) due to null energy condition (NEC) violation in two very early universe scenarios: bounce-inflat…
astro-ph.CO2024★ 5 cited
Climbing over the potential barrier during inflation via null energy condition violation
Shi Pan, Yong Cai, Yun-Song Piao
The violation of the null energy condition (NEC) may play a crucial role in enabling a scalar field to climb over high potential barriers, potentially significant in the very early…