Evasion of No-Hair Theorems and Novel Black-Hole Solutions in Gauss-Bonnet Theories
Georgios AntoniouDepartment of Physics, University of Ioannina, Ioannina GR-45110, GreeceAthanasios BakopoulosDepartment of Physics, University of Ioannina, Ioannina GR-45110, GreecePanagiota KantiDepartment of Physics, University of Ioannina, Ioannina GR-45110, Greece
2018en
ABI
Annotatsiya
We consider a general Einstein-scalar-Gauss-Bonnet theory with a coupling function f(ϕ). 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 mild assumptions for f(ϕ). We show that the existing no-hair theorems are easily evaded, and a large number of regular black-hole solutions with scalar hair are then presented for a plethora of coupling functions f(ϕ).
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