Scalar charges and pulsar-timing observables in the presence of nonminimally coupled scalar fields
arXiv:1903.11638 · doi:10.1103/PhysRevD.99.124003
Abstract
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 , pulsar-timing constraints may be evaded even in the presence of spontaneous scalarization.
arXiv comment12 pages, 6 figures
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