Sep 24 – 28, 2017
Kazimierz Dolny, Poland
Europe/Warsaw timezone

Black hole hair formation in shift-symmetric generalised scalar-tensor gravity

Sep 26, 2017, 3:50 PM
Kazimierz Dolny, Poland

Kazimierz Dolny, Poland

Dom Pracy Twórczej SDP ul. Małachowskiego 17 24-120 Kazimierz Dolny
Oral presentation (preferred) Black holes and entropy


Robert Benkel (University of Nottingham)


A linear coupling between a scalar field and the Gauss–Bonnet invariant is the only known interaction term between a scalar and the metric that: respects shift symmetry; does not lead to higher order equations; inevitably introduces black hole hair in asymptotically flat, 4-dimensional spacetimes. I will consider a scalar-tensor theory of gravity that includes such a coupling and present results of numerical simulations of hair formation in a static, spherically symmetric background. I will also show that backgrounds describing stellar collapse yield similar field configurations. I will then discuss the physical implications of these results and possible extensions of our work to rotating spacetimes.

Primary authors

Helvi Witek Robert Benkel (University of Nottingham) Thomas Sotiriou

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