Self-interactions can (also) destabilize bosonic stars
arXiv:2404.08740 · doi:10.1088/1361-6382/ad7188
Abstract
We study the dynamical stability of Proca-Higgs stars, in spherical symmetry. These are solutions of the Einstein-Proca-Higgs model, which features a Higgs-like field coupled to a Proca field, both of which minimally coupled to the gravitational field. The corresponding stars can be regarded as Proca stars with self-interactions, while avoiding the hyperbolicity issues of self-interacting Einstein-Proca models. We report that these configurations are stable near the Proca limit in the candidate stable branches, but exhibit instabilities in certain parts of the parameter space, even in the candidate stable branches, regaining their stability for very strong self-interactions. This shows that for these models, unlike various examples of scalar boson stars, self-interactions can deteriorate, rather than improve, the dynamical robustness of bosonic stars.
arXiv comment14 pages, 11 figures, updated to match the published version
References in corpus (52)
- On the Numerical Integration of Einstein's Field Equations
- TOPICAL REVIEW: General relativistic boson stars
- Gauge conditions for long-term numerical black hole evolutions without excision
- Shadows of Kerr black holes with scalar hair
- Proca Stars: gravitating Bose-Einstein condensates of massive spin 1 particles
- GW190521 as a merger of Proca stars: a potential new vector boson of eV
- Chaotic lensing around boson stars and Kerr black holes with scalar hair
- Explosion and final state of an unstable Reissner-Nordstrom black hole
- Imaging a boson star at the Galactic center
- How to tell an accreting boson star from a black hole
- The imitation game: Proca stars that can mimic the Schwarzschild shadow
- Boson Stars: Alternatives to primordial black holes?
- Non-linear dynamics of spinning bosonic stars: formation and stability
- Shadows of boson and Proca stars with thin accretion disks
- Asymptotically flat scalar, Dirac and Proca stars: discrete vs. continuous families of solutions
- Multi-state Boson Stars
- Lensing and dynamics of ultra-compact bosonic stars
- Asymptotically flat spinning scalar, Dirac and Proca stars
- Imaging compact boson stars with hot-spots and thin accretion disks
- Stability of rotating scalar boson stars with nonlinear interactions
- Head-on collisions and orbital mergers of Proca stars
- -Boson stars
- Spherical Boson Stars as Black Hole mimickers
- BSSN equations in spherical coordinates without regularization: vacuum and non-vacuum spherically symmetric spacetimes
- Axion boson stars
- Formulations of the 3+1 evolution equations in curvilinear coordinates
- Supermassive black holes or boson stars? Hair counting with gravitational wave detectors
- The problem with Proca: ghost instabilities in self-interacting vector fields
- Kerr black holes with synchronised Proca hair: lensing, shadows and EHT constraints
- Charged Proca Stars
- Dynamical formation and stability of fermion-boson stars
- Hairy black holes, boson stars and non-minimal coupling to curvature invariants
- Wireless Communications and Control for Swarms of Cellular-Connected UAVs
- Comparing timelike geodesics around a Kerr black hole and a boson star
- Equatorial timelike circular orbits around generic ultracompact objects
- A singularity problem for interacting massive vectors
- Gauss-Bonnet boson stars
- A stabilization mechanism for excited fermion-boson stars
- Quasistationary solutions of self-gravitating scalar fields around collapsing stars
- Proca-Higgs balls and stars in a UV completion for Proca self-interactions
- Asymptotically anti-de Sitter Proca Stars
- Stability and physical properties of spherical excited scalar boson stars
- Boson stars in Palatini gravity
- Coordinate singularities of self-interacting vector field theories
- Quasistationary solutions of scalar fields around collapsing self-interacting boson stars
- Fermion Proca Stars: Vector Dark Matter Admixed Neutron Stars
- Boson stars in the centre of galaxies?
- Self-interacting dipolar boson stars and their dynamics
- Axially symmetric Proca-Higgs boson stars
- Scalaroca stars: coupled scalar-Proca solitons
- Proca stars with nonminimal coupling to the Einstein tensor
- Highly compact Proca stars with quartic self-interactions