Vortices and black holes in dilatonic gravity

• Type: Article in International Scientific Journal
• Date: 2000

Authors

C. dos Santos (Author) FCUP; Gregory, R (Author) Other

Journal

Title: Physical Review D: Particles and fields

Vol. 61

Pages: 1-12

ISSN: 0556-2821

Publisher: American Physical Society

Indexing

Scopus - 10 Citations

Scientific classification

CORDIS: Physical sciences

FOS: Natural sciences

Other information

Authenticus ID: P-007-CV4

Abstract (EN): We study analytically black holes pierced by a thin vortex in dilatonic gravity for an arbitrary coupling of the vortex to the dilaton in an arbitrary frame. We show that the horizon of the charged black hole supports the long-range fields of the Nielsen-Olesen vortex that can be considered as black hole hair for both massive and massless dilatons. We also prove that extremal black holes exhibit a flux expulsion phenomenon for a sufficiently thick vortex. We consider the gravitational back reaction of the thin vortex on the spacetime geometry and dilaton, and discuss under what circumstances the vortex can be used to smooth out the singularities in the dilatonic C metrics. The effect of the vortex on the massless dilaton is to generate an additional dilaton flux across the horizon. ©1999 The American Physical Society.

Language: English

Type (Professor's evaluation): Scientific