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
20m
Kazimierz Dolny, Poland

Kazimierz Dolny, Poland

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

Speaker

Robert Benkel (University of Nottingham)

Description

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

Presentation materials

There are no materials yet.