Electrically Charged Proca Stars
Yahir Mio, Miguel Alcubierre

TL;DR
This paper constructs and analyzes charged Proca star solutions in spherical symmetry, revealing a critical charge where Coulomb repulsion balances gravity, and identifying stability limits related to charge and binding energy.
Contribution
It introduces the first detailed construction of charged Proca stars, exploring their properties, stability, and the critical charge where forces balance.
Findings
Existence of a critical charge $q_c$ where Coulomb repulsion balances gravity.
Supercritical solutions exist but are likely unstable.
Bound states with negative binding energy only occur for subcritical charges.
Abstract
We consider self-gravitating stationary configurations of a charged massive complex Proca field, also known as charged Proca stars, in the particular case of spherical symmetry. We first present a general 3+1 decomposition of the Einstein--Maxwell--Proca system, starting from the action and field equations. We then restrict our system to the case of spherical symmetry and, after imposing a harmonic time dependence ansatz for the Proca field, we construct families of charged Proca stars for different values of the charge parameter , and different values of the central Proca scalar potential . In a similar way to the case of scalar boson stars, one can define a critical charge that corresponds to the value for which the Coulomb repulsion of the charged Proca field exactly cancels their newtonian gravitational attraction. We find that supercritical solutions can exist…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsPulsars and Gravitational Waves Research · Black Holes and Theoretical Physics · Cosmology and Gravitation Theories
