Electromagnetism and hidden vector fields in modified gravity theories: spontaneous and induced vectorization
arXiv:1901.02461 · doi:10.1103/PhysRevD.99.044038
Abstract
In general relativity, Maxwell's equations are embedded in curved spacetime through the minimal prescription, but this could change if strong-gravity modifications are present. We show that with a nonminimal coupling between gravity and a massless vector field, nonperturbative effects can arise in compact stars. We find solutions describing stars with nontrivial vector field configurations, some of which are associated to an instability, while others are not. The vector field can be interpreted either as the electromagnetic field, or as a hidden vector field weakly coupled with the standard model.
12 pages, RevTeX4. Matches published version
References in corpus (7)
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- A Massive Pulsar in a Compact Relativistic Binary
- The relativistic pulsar-white dwarf binary PSR J1738+0333 I. Mass determination and evolutionary history
- Spontaneous growth of vector fields in gravity
- Awaking the vacuum in relativistic stars
- The vacuum revealed: the final state of vacuum instabilities in compact stars
- Jordan frame beyond scalar-tensor theories