Title: gThe black hole rigidity theorem in effective field theoryh

Speaker: Akihiro Ishibashi(Kindai University)

Date/time/place: 27th Jan. 2023, 13:00-16:00, 509(Math. bldg.)

Abstract: 

The black hole rigidity theorem asserts that a rotating stationary black hole must be axisymmetric. This theorem holds for General Relativity with suitable matter fields, in four or more dimensions. We show that the theorem can be extended to any diffeomorphism invariant theory of vacuum gravity, assuming that this is interpreted in the sense of effective field theory, with coupling constants determined in terms of a ``UV scale'', and that the black hole solution can be expanded as a power series in this scale.