Brihaye, Yves;
Hartmann, Betti;
Kleihaus, Burkhard;
Kunz, Jutta;
(2022)
Horndeski-Proca stars with vector hair.
Physical Review D
, 105
(4)
, Article 044050. 10.1103/physrevd.105.044050.
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Abstract
We study Proca stars in a vector-tensor gravity model inspired by Horndeski’s generalized Einstein-Maxwell field equations, supplemented with a mass term for the vector field. We discuss the effects of the nonminimal coupling term on the properties of the resulting Proca stars. We show that the sign of the coupling constant is crucial in determining the generic properties of these generalized Proca star solutions, as soon as the magnitude of the coupling constant is sufficiently large to allow for significant deviations from the standard Proca star case. For negative coupling constant we observe a new type of limiting behavior for the generalized Proca stars, where the spacetime splits into an interior region with matter fields and an exterior Schwarzschild region.
| Type: | Article |
|---|---|
| Title: | Horndeski-Proca stars with vector hair |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/physrevd.105.044050 |
| Publisher version: | https://doi.org/10.1103/PhysRevD.105.044050 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher's terms and conditions. |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Mathematics UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10144916 |
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