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Scalar charges and pulsar-timing observables in the presence of nonminimally coupled scalar fields

Mendes, Raissa F. P. ; Ottoni, Tulio

Physical review. D, 2019-06, Vol.99 (12), p.1, Article 124003 [Periódico revisado por pares]

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Título:
Scalar charges and pulsar-timing observables in the presence of nonminimally coupled scalar fields
Autor: Mendes, Raissa F. P. ; Ottoni, Tulio
Assuntos: Neutron stars ; Pulsars ; Relativity ; Tensors
É parte de: Physical review. D, 2019-06, Vol.99 (12), p.1, Article 124003
Descrição: 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 ξ, pulsar-timing constraints may be evaded even in the presence of spontaneous scalarization.
Editor: College Park: American Physical Society
Idioma: Inglês

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