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Interface modes in inspiralling neutron stars: A gravitational-wave probe of first-order phase transitions

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arxiv 2504.06181 v3 pith:NAPZ7YCZ submitted 2025-04-08 gr-qc astro-ph.HEnucl-th

A. R. Counsell , F. Gittins , N. Andersson , I. Tews This is my paper · ORCID
classification gr-qcastro-ph.HEnucl-th
keywords first-orderphasetransitiondensitiesgravitational-waveinterfaceneutronstars
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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.

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Forward citations

Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Dynamical neutron-star tides: The signature of a mode resonance

    gr-qc 2025-08 accept novelty 6.0 of 10

    A non-singular closed-form expression describes the resonant mode contribution to the frequency-dependent tidal deformability of a neutron star across the full resonance crossing.

  2. TTE-CAM: Self-Explainable Class Activation Maps for Pretrained Black-Box CNNs

    cs.CV 2026-03 unverdicted novelty 5.0 of 10

    A test-time convolution-head replacement converts pretrained CNNs into self-explainable models that keep black-box accuracy and produce faithful class activation maps.

  3. Model-Independent Determination of the Tidal Deformability of a 1.4 $M_{\odot}$ Neutron Star from Gravitational-Wave Measurements

    astro-ph.HE 2025-05 conditional novelty 4.0 of 10

    Interpolating GW170817 mass and tidal deformability posteriors yields an equation of state agnostic tidal deformability for a 1.4 solar mass neutron star, Lambda_1.4 = 222.89 (+420.33, -98.85).

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