Scalar charges and pulsar-timing observables in the presence of nonminimally coupled scalar fields
Pulsar-timing has become a celebrated tool for probing modifications to General Relativity in the strong-field surroundings of neutron stars. Here we investigate whether scalar-tensor theories that incorporate a nonminimally coupled scalar degree of freedom may pass pulsar-timing tests, by computing...
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Veröffentlicht in: | arXiv.org 2019-06 |
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Hauptverfasser: | , |
Format: | Artikel |
Sprache: | eng |
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Online-Zugang: | Volltext |
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Zusammenfassung: | Pulsar-timing has become a celebrated tool for probing modifications to General Relativity in the strong-field surroundings of neutron stars. Here we investigate whether scalar-tensor theories that incorporate a nonminimally coupled scalar degree of freedom may pass pulsar-timing tests, by computing the scalar charges entering such observables. In particular we show that for positive values of the nonminimal coupling \(\xi\), pulsar-timing constraints may be evaded even in the presence of spontaneous scalarization. |
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ISSN: | 2331-8422 |
DOI: | 10.48550/arxiv.1903.11638 |