MG12 - Talk detail |
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Participant |
Stefanov, Ivan | |
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Institution |
Sofia University, Faculty of Physics - 5 James Bourchier Blvd. - Sofia - - Bulgaria | |
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Session |
Talk |
Abstract |
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MGAT8 |
Phases of 4D black holes in scalar-tensor theories of gravity with non-linear electrodynamics |
According to the no-scalar-hair conjecture, black-hole solutions in scalar-tensor theories of gravity (STT) can be fully classifed by their asymptotic preserved charges - mass, electric (magnetic) charge and angular momentum, exactly as in General Relativity (GR). This makes the black holes in STT undistinguishable from those in GR for a distant observer. There is a series of theorems that confirm the conjecture in the vacuum and electrovacuum cases. The present talk is dedicated to new non-unique, numerical solutions that serve as counter-examples of the no-scalar-hair conjecture. They describe charged black holes coupled to non-linear electrodynamics in special classes of STT that posses primary scalar hair. |