Climbing over the potential barrier during inflation via null energy condition violation by Shi Pan, Yong Cai, Yun-Song Piao

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Primordial extreme mass-ratio inspirals by Hai-Long Huang, Tian-Yi Song, Yun-Song Piao

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Parity-violating primordial gravitational waves from null energy condition violation by Zi-Wei Jiang, Yong Cai, Fei Wang, Yun-Song Piao

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