Gravitational Wave Memory in Beyond GR Theories
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866910201750224896 |
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| author | Gasparotto, Silvia |
| author_facet | Gasparotto, Silvia |
| contents | Gravitational-wave memory is a low-frequency, non-oscillatory signal that provides a promising probe of strong-field gravity. We present the first computation of memory from full inspiral--merger--ringdown waveforms in a theory beyond GR, focusing on scalar Gauss--Bonnet gravity. We find percent-level deviations from GR, mainly driven by modified merger dynamics, while scalar-induced contributions to tensor memory are strongly suppressed. We found that including memory greatly enhances the mismatch between GR and beyond-GR waveforms, highlighting its potential as a complementary observable for tests of gravity with next-generation detectors. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2605_07879 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Gravitational Wave Memory in Beyond GR Theories Gasparotto, Silvia General Relativity and Quantum Cosmology Gravitational-wave memory is a low-frequency, non-oscillatory signal that provides a promising probe of strong-field gravity. We present the first computation of memory from full inspiral--merger--ringdown waveforms in a theory beyond GR, focusing on scalar Gauss--Bonnet gravity. We find percent-level deviations from GR, mainly driven by modified merger dynamics, while scalar-induced contributions to tensor memory are strongly suppressed. We found that including memory greatly enhances the mismatch between GR and beyond-GR waveforms, highlighting its potential as a complementary observable for tests of gravity with next-generation detectors. |
| title | Gravitational Wave Memory in Beyond GR Theories |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2605.07879 |