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Title: Probing the Ellis-Bronnikov wormhole geometry with a scalar field: clouds, waves and Q-balls
Author: Blázquez-Salcedo, Jose Luis
Dariescu, Marina-Aura
Dariescu, Ciprian
Radu, Eugen
Stelea, Cristian
Issue Date: 11-Apr-2022
Publisher: Elsevier
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' ($i.e.$ 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.
Peer review: yes
DOI: 10.1016/j.physletb.2022.136993
ISSN: 0370-2693
Appears in Collections:CIDMA - Artigos
GGDG - Artigos

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