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PRODID:Faculty of Science and Engineering - Research
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SUMMARY:GAnG seminar - Betti Hartmann, Black holes and boson stars with wavy scalar hair
DESCRIPTION;ENCODING=QUOTED-PRINTABLE: Black holes and boson stars with wavy scalar hair=0D=0A=
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Static, spherically symmetric black holes can carry scalar hair when coupling standard Einstein gravity minimally to a self-interacting complex scalar field and a U(1) gauge field. For this scalar hair to exist, the frequency of the scalar field needs to be fine-tuned. In this talk, I will discuss these solutions and point out that for sufficiently large gravitational coupling, the space-time splits into two distinct parts: (a) an inflating interior and (b) an exterior which is described by the extremal Reissner-Nordström solution. Moreover, for a specific range of parameters, the scalar hair develops spatial oscillations, i.e. black holes can carry so-called wavy scalar hair. I will also comment on the globally regular counterparts of these solutions: charged boson stars.=0D=0A=
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LOCATION:MB503
DTSTART:20250401T140000
DTEND:20250401T150000
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