HEM 2016: Black Holes and Abelian Symmetry Breaking

hechoenmexico

Black Holes and Abelian Symmetry Breaking

Black hole configurations offer insights on the non-linear aspects of gravitational theories, and can suggest testable predictions for modifications of General Relativity. In this work, we examine exact black hole configurations in vector-tensor theories, originally proposed to explain dark energy by breaking the Abelian symmetry with a non-minimal coupling of the vector to gravity. We are able to evade the no-go theorems by Bekenstein on the existence of regular black holes in vector-tensor theories with Proca mass terms, and exhibit regular black hole solutions with a profile for the longitudinal vector polarization, characterised by an additional charge. We analytically find the most general static, spherically symmetric black hole solutions with and without a cosmological constant, and study in some detail their features, such as how the geometry depends on the vector charges. We also include angular momentum, and find solutions describing slowly-rotating black holes. Finally, we extend some of these solutions to higher dimensions.

Comments: 13 pages
Subjects: High Energy Physics – Theory (hep-th); General Relativity and Quantum Cosmology (gr-qc)
Cite as: arXiv:1602.08697 [hep-th]
(or arXiv:1602.08697v1 [hep-th] for this version)

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