English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A linear coupling between a scalar field and the Gauss-Bonnet invariant isthe only known interaction term between a scalar and the metric that: respectsshift symmetry; does not lead to higher order equations; inevitably introducesblack hole hair in asymptotically flat, 4-dimensional spacetimes. Here we focuson the simplest theory that includes such a term and we explore the dynamicalformation of scalar hair. In particular, we work in the decoupling limit thatneglects the backreaction of the scalar onto the metric and evolve the scalarconfiguration numerically in the background of a Schwarzschild black hole or acollapsing dust star described by the Oppenheimer-Snyder solution. For alltypes of initial data that we consider, the scalar relaxes at late times to theknown, static, analytic configuration that is associated with a hairy,spherically symmetric black hole. This suggests that the corresponding blackhole solutions are indeed endpoints of collapse.

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