Gravitational Waves from Primordial Black Holes formed by Null Energy Condition Violation during Inflation
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866914336540196864 |
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| author | Yu, Dong-Hui Zhang, Jia-Zuo Cai, Yong |
| author_facet | Yu, Dong-Hui Zhang, Jia-Zuo Cai, Yong |
| contents | 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 (GW) backgrounds. In this work, we extend previous studies by computing the GW contributions from both the ringdown phase of PBH formation and subsequent binary mergers. Our results show that this scenario produces a rich, multi-component GW spectrum consisting of primordial GWs, scalar-induced GWs, and GW emissions from PBH ringdown and binary mergers. We demonstrate that these correlated signatures across different frequency bands provide a novel and powerful avenue to probe or constrain NEC violation during inflation through future multi-band GW observations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_16292 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Gravitational Waves from Primordial Black Holes formed by Null Energy Condition Violation during Inflation Yu, Dong-Hui Zhang, Jia-Zuo Cai, Yong General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology High Energy Physics - Theory 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 (GW) backgrounds. In this work, we extend previous studies by computing the GW contributions from both the ringdown phase of PBH formation and subsequent binary mergers. Our results show that this scenario produces a rich, multi-component GW spectrum consisting of primordial GWs, scalar-induced GWs, and GW emissions from PBH ringdown and binary mergers. We demonstrate that these correlated signatures across different frequency bands provide a novel and powerful avenue to probe or constrain NEC violation during inflation through future multi-band GW observations. |
| title | Gravitational Waves from Primordial Black Holes formed by Null Energy Condition Violation during Inflation |
| topic | General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2602.16292 |