Non-Abelian black holes in Brans-Dicke theory

Takashi Tamaki, Kei ichi Maeda

研究成果: Article査読

20 被引用数 (Scopus)

抄録

We find a black hole solution with a non-Abelian field in Brans-Dicke theory. It is an extension of a non-Abelian black hole in general relativity. We discuss two non-Abelian fields: an “SU(2)” Yang-Mills field with a mass (Proca field) and the SU(2)(Formula presented)SU(2) Skyrme field. In both cases, as in general relativity, there are two branches of solutions, i.e., two black hole solutions with the same horizon radius. The masses of both black holes are always smaller than those in general relativity. A cusp structure in the mass-horizon radius (Formula presented)-(Formula presented) diagram, which is a typical symptom of stability change in catastrophe theory, does not appear in the Brans-Dicke frame but is found in the Einstein conformal frame. This suggests that catastrophe theory may be simply applied for a stability analysis as it is if we use the variables in the Einstein frame. We also discuss the effects of the Brans-Dicke scalar field on black hole structure.

本文言語English
ページ(範囲)4870-4884
ページ数15
ジャーナルPhysical Review D - Particles, Fields, Gravitation and Cosmology
57
8
DOI
出版ステータスPublished - 1998

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 物理学および天文学(その他)

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