Spherically symmetric solutions in covariant Horava-Lifshitz gravity

Alexandre, J; Pasipoularides, P

dc.contributor.author	Alexandre, J	en
dc.contributor.author	Pasipoularides, P	en
dc.date.accessioned	2014-03-01T01:37:06Z
dc.date.available	2014-03-01T01:37:06Z
dc.date.issued	2011	en
dc.identifier.issn	1550-7998	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21449
dc.subject.classification	Astronomy & Astrophysics	en
dc.subject.classification	Physics, Particles & Fields	en
dc.subject.other	BLACK-HOLES	en
dc.subject.other	THERMODYNAMICS	en
dc.title	Spherically symmetric solutions in covariant Horava-Lifshitz gravity	en
heal.type	journalArticle	en
heal.identifier.primary	10.1103/PhysRevD.83.084030	en
heal.identifier.secondary	http://dx.doi.org/10.1103/PhysRevD.83.084030	en
heal.identifier.secondary	084030	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	We study the most general case of spherically symmetric vacuum solutions in the framework of the covariant Horava-Lifshitz gravity, for an action that includes all possible higher order terms in curvature which are compatible with power-counting normalizability requirement. We find that solutions can be separated into two main classes: (i) solutions with nonzero radial shift function, and (ii) solutions with zero radial shift function. In the case (ii), spherically symmetric solutions are consistent with observations if we adopt the view of Horava and Melby-Tomson [P. Horava and C. M. Melby-Thompson, Phys. Rev. D 82, 064027 (2010).], according to which the auxiliary field A can be considered as a part of an effective general relativistic metric, which is valid only in the IR limit. On the other hand, in the case (i), consistency with observations implies that the field A should be independent of the spacetime geometry, as the Newtonian potential arises from the nonzero radial shift function. Also, our aim in this paper is to discuss and compare these two alternative but different assumptions for the auxiliary field A.	en
heal.publisher	AMER PHYSICAL SOC	en
heal.journalName	Physical Review D - Particles, Fields, Gravitation and Cosmology	en
dc.identifier.doi	10.1103/PhysRevD.83.084030	en
dc.identifier.isi	ISI:000290111200009	en
dc.identifier.volume	83	en
dc.identifier.issue	8	en