Interface modes in inspiralling neutron stars: A gravitational-wave probe of first-order phase transitions
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866915456367984640 |
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| author | Counsell, A. R. Gittins, F. Andersson, N. Tews, I. |
| author_facet | Counsell, A. R. Gittins, F. Andersson, N. Tews, I. |
| contents | At the extreme densities in neutron stars, a phase transition to deconfined quark matter is anticipated. Yet masses, radii and tidal deformabilities offer only indirect measures of a first-order phase transition, requiring many detections to resolve or being ineffective observables if the discontinuity exists at lower densities. We report on a smoking-gun gravitational-wave signature of a first-order transition: the resonant tidal excitation of an interface mode. Using relativistic perturbation theory with an equation-of-state family informed by chiral effective field theory, we show that such a resonance may be detectable with next-generation interferometers and possibly already with LIGO A+ for sufficiently loud events. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_06181 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Interface modes in inspiralling neutron stars: A gravitational-wave probe of first-order phase transitions Counsell, A. R. Gittins, F. Andersson, N. Tews, I. General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena Nuclear Theory At the extreme densities in neutron stars, a phase transition to deconfined quark matter is anticipated. Yet masses, radii and tidal deformabilities offer only indirect measures of a first-order phase transition, requiring many detections to resolve or being ineffective observables if the discontinuity exists at lower densities. We report on a smoking-gun gravitational-wave signature of a first-order transition: the resonant tidal excitation of an interface mode. Using relativistic perturbation theory with an equation-of-state family informed by chiral effective field theory, we show that such a resonance may be detectable with next-generation interferometers and possibly already with LIGO A+ for sufficiently loud events. |
| title | Interface modes in inspiralling neutron stars: A gravitational-wave probe of first-order phase transitions |
| topic | General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena Nuclear Theory |
| url | https://arxiv.org/abs/2504.06181 |