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arXiv · 1705.09662

Hairy black-hole solutions in generalized Proca theories

Lavinia Heisenberg·Ryotaro Kase·Masato Minamitsuji·Shinji Tsujikawa
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Abstract

We present a family of exact black-hole solutions on a static spherically symmetric background in second-order generalized Proca theories with derivative vector-field interactions coupled to gravity. We also derive non-exact solutions in power-law coupling models including vector Galileons and numerically show the existence of regular black holes with a primary hair associated with the longitudinal propagation. The intrinsic vector-field derivative interactions generally give rise to a secondary hair induced by non-trivial field profiles. The deviation from General Relativity is most significant around the horizon and hence there is a golden opportunity for probing the Proca hair by the measurements of gravitational waves (GWs) in the regime of strong gravity.

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Lavinia Heisenberg, Ryotaro Kase, Masato Minamitsuji, Shinji Tsujikawa. 2017-10-26. Hairy black-hole solutions in generalized Proca theories. https://doi.org/10.1103/physrevd.96.084049

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