paper

Hairy Schwarzschild-(A)dS black hole solutions in DHOST theories beyond shift symmetry

arXiv:1811.05369 · doi:10.1103/PhysRevD.99.064042

Abstract

We derive the general conditions for a large family of shift symmetry breaking degenerate higher order scalar-tensor (DHOST) theories to admit stealth black hole solutions. Such black hole configurations correspond to vacuum solutions of General Relativity and admit a scalar hair which does not gravitate, revealing itself only at the perturbative level. We focus our investigation on hairy Schwarzschild-(A)dS or pure Schwarzschild solutions, dressed with a linear time-dependent scalar hair, and assuming a constant kinetic term. We also discuss subclasses of this family which satisfy the observational constraint , as well as the recent constraint ensuring the absence of graviton decay. We provide at the end concrete examples of DHOST lagrangians satisfying our conditions. This work provides a first analysis of exact black hole solutions in shift symmetry breaking DHOST theories beyond Horndeski.

arXiv comment7 pages, mistake corrected, conclusion partially changed, concrete examples added

References in corpus (38)

Cited by in corpus (60)