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gr-qc2026
Does Eternal Inflation Violate the Smeared Null Energy Condition?
Dong-Hui Yu, Yong Cai
The smeared null energy condition (SNEC) imposes a semilocal bound on the negative energy accumulated along null geodesics. In eternal inflation, rare stochastic upward fluctuation…
gr-qc2026
Gravitational Waves from Primordial Black Holes formed by Null Energy Condition Violation during Inflation
Dong-Hui Yu, Jia-Zuo Zhang, Yong Cai
A transient violation of the null energy condition (NEC) during inflation provides a novel mechanism for producing primordial black holes (PBHs) and stochastic gravitational wave (…