Change search
ReferencesLink to record
Permanent link

Direct link
Gravitational collapse in Hořava-Lifshitz theory
2013 (English)In: Physical Review D, ISSN 1550-7998, Vol. 88, no 2, 024044Article in journal (Refereed) Published
Abstract [en]

We study gravitational collapse of a spherical fluid in nonrelativistic general covariant theory of the Hořava-Lifshitz gravity with the projectability condition and an arbitrary coupling constant λ, where |λ-1| characterizes the deviation of the theory from general relativity in the infrared limit. The junction conditions across the surface of a collapsing star are derived under the (minimal) assumption that the junctions be mathematically meaningful in terms of distribution theory. When the collapsing star is made of a homogeneous and isotropic perfect fluid, and the external region is described by a stationary spacetime, the problem reduces to the matching of six independent conditions. If the perfect fluid is pressureless (a dust fluid), it is found that the matching is also possible. In particular, in the case λ=1, the external spacetime is described by the Sch-(anti-)de Sitter solution written in Painlevé-Gullstrand coordinates. In the case λ≠1, the external spacetime is static but not asymptotically flat. Our treatment can be easily generalized to other versions of Hořava-Lifshitz gravity or, more generally, to any theory of higher-order derivative gravity.

Place, publisher, year, edition, pages
2013. Vol. 88, no 2, 024044
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-163797DOI: 10.1103/PhysRevD.88.024044ISI: 000322216900006ScopusID: 2-s2.0-84881513792OAI: diva2:802396

QC 20150420

Available from: 2015-04-13 Created: 2015-04-12 Last updated: 2015-04-20Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Lenells, Jonatan
In the same journal
Physical Review D
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 12 hits
ReferencesLink to record
Permanent link

Direct link