Lifshitz black holes with a time-dependent scalar field in a Horndeski theory

Gaete, MB; Hassaine M.

Abstract

In arbitrary dimensions, we consider a particular Horndeski action given by the Einstein-Hilbert Lagrangian with a cosmological constant term, while the source part is described by a real scalar field with its usual kinetic term together with a nonminimal kinetic coupling. In order to evade the no-hair theorem, we look for solutions where the radial component of the conserved current vanishes identically. Under this hypothesis, we prove that this model cannot accommodate Lifshitz solutions with a radial scalar field. This problem is finally circumvented by turning on the time dependence of the scalar field, and we obtain a Lifshitz black hole solution with a fixed value of the dynamical exponent z = 1/3. The same metric is also shown to satisfy the field equations arising only from the variation of the matter source.

Más información

Título según WOS: Lifshitz black holes with a time-dependent scalar field in a Horndeski theory
Título según SCOPUS: Lifshitz black holes with a time-dependent scalar field in a Horndeski theory
Título de la Revista: PHYSICAL REVIEW D
Volumen: 89
Número: 10
Editorial: American Physical Society
Fecha de publicación: 2014
Idioma: English
DOI:

10.1103/PhysRevD.89.104028

Notas: ISI, SCOPUS