MG15 - Talk detail |
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Participant |
Kanti, Panagiota | |||||||
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Institution |
University of Ioannina, Physics Dept. - Panepistimioupolis - Ioannina - Epirus - Greece | |||||||
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Session |
AT4 |
Accepted |
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Oral abstract |
Title |
Scalar-Gauss-Bonnet Theories: Evasion of No-Hair Theorems and Novel Black-Hole Solutions | |||||
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Abstract |
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. We show that the existing no-hair theorems are easily evaded under mild assumptions for the coupling function f(\phi). We consider a variety of forms for the coupling function (exponential, even and odd polynomial, inverse polynomial, and logarithmic), and present the corresponding families of regular black-hole solutions with non-trivial scalar hair. We also determine and study in detail the properties of the derived black holes such as the scalar charge, horizon area and entropy. |
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Session |
AT1 |
Accepted |
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