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- W2892223320 abstract "We study a hairy black hole solution in the dilatonic Einstein-Gauss-Bonnet theory of gravitation, in which the Gauss-Bonnet term is non-minimally coupled to the dilaton field. Hairy black holes with spherical symmetry seem to be easily constructed with a positive Gauss-Bonnet coefficient $alpha$ within the coupling function, $f(phi) = alpha e^{gamma phi}$, in an asymptotically flat spacetime, i.e., no-hair theorem seems to be easily evaded in this theory. Therefore, it is natural to ask whether this construction can be expanded into the case with the negative coefficient $alpha$. In this paper, we present numerically the dilaton black hole solutions with a negative $alpha$ and analyze the properties of GB term through the aspects of the black hole mass. We construct the new integral constraint allowing the existence of the hairy solutions with the negative $alpha$. Through this procedure, we expand the evasion of the no-hair theorem for hairy black hole solutions." @default.
- W2892223320 created "2018-09-27" @default.
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- W2892223320 date "2019-01-02" @default.
- W2892223320 modified "2023-10-14" @default.
- W2892223320 title "Expanded evasion of the black hole no-hair theorem in dilatonic Einstein-Gauss-Bonnet theory" @default.
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- W2892223320 doi "https://doi.org/10.1103/physrevd.99.024002" @default.
- W2892223320 hasPublicationYear "2019" @default.
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