Probing the Ellis-Bronnikov wormhole geometry with a scalar field: clouds, waves and Q-balls
arXiv:2204.05244 · doi:10.1016/j.physletb.2022.136993
Abstract
The Ellis-Bronnikov solution provides a simple toy model for the study of various aspects of wormhole physics. In this work we solve the Klein-Gordon equation in this background and find an exact solution in terms of Heun's function. This may describe 'scalar clouds' ( localized, particle-like configuration) or scalar waves. However, in the former case, the radial derivative of the scalar field is discontinuous at the wormhole's throat (except for the spherical case). This pathology is absent for a suitable scalar field self-interaction, and we provide evidence for the existence of spherically symmetric and spinning Q-balls in a Ellis-Bronnikov wormhole background.
arXiv comment11 pages, 3 figures
References in corpus (8)
- Stationary ring solitons in field theory - knots and vortons
- Rotating Boson Stars and Q-Balls
- Stable Lorentzian Wormholes in Dilatonic Einstein-Gauss-Bonnet Theory
- Spinning Q-Balls
- Rotating Boson Stars and Q-Balls II: Negative Parity and Ergoregions
- Multipolar boson stars: macroscopic Bose-Einstein condensates akin to hydrogen orbitals
- Boson Stars with Nontrivial Topology
- Chains of Boson Stars