Curvature Perturbations from First-Order Phase Transitions: Implications to Black Holes and Gravitational Waves
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866913095080738816 |
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| author | Franciolini, Gabriele Gouttenoire, Yann Jinno, Ryusuke |
| author_facet | Franciolini, Gabriele Gouttenoire, Yann Jinno, Ryusuke |
| contents | Understanding whether primordial black holes form during strong first-order phase transition (FOPT) is a crucial open question in cosmology. We address this using a fully covariant formalism to study cosmological perturbations, highlighting previously overlooked gauge dependencies. We show that non-covariant treatments can overestimate primordial black holes and scalar-induced gravitational waves. Once gauge dependencies are accounted for, both signals are strongly suppressed, with direct implications for the FOPT interpretation of the Pulsar Timing Array signal. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_01962 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Curvature Perturbations from First-Order Phase Transitions: Implications to Black Holes and Gravitational Waves Franciolini, Gabriele Gouttenoire, Yann Jinno, Ryusuke High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology Understanding whether primordial black holes form during strong first-order phase transition (FOPT) is a crucial open question in cosmology. We address this using a fully covariant formalism to study cosmological perturbations, highlighting previously overlooked gauge dependencies. We show that non-covariant treatments can overestimate primordial black holes and scalar-induced gravitational waves. Once gauge dependencies are accounted for, both signals are strongly suppressed, with direct implications for the FOPT interpretation of the Pulsar Timing Array signal. |
| title | Curvature Perturbations from First-Order Phase Transitions: Implications to Black Holes and Gravitational Waves |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2503.01962 |