Evasion of No-Hair Theorems in Gauss-Bonnet Theories.
We consider a general Einstein-scalar-GB theory with a coupling function f(\phi). We demonstrate that black-hole solutions appear as a generic feature of this theory since a regular horizon and an asymptotically-flat solution may be easily constructed under certain assumptions. We also show that the existing no-hair theorems are easily evaded for a plethora of coupling functions f(\phi). On the contrary, regular black-hole solutions do not emerge in the context of a pure scalar-GB theory.
Publisher URL: http://arxiv.org/abs/1711.03390
DOI: arXiv:1711.03390v1
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