Spherically symmetric solutions in covariant Horava-Lifshitz gravity

Journal Article · Fri Apr 15 04:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.084030· OSTI ID:21541496

Alexandre, Jean ^[1]; Pasipoularides, Pavlos ^[2]

---

1. King's College London, Department of Physics, London WC2R 2LS (United Kingdom)
2. Department of Physics, National Technical University of Athens, Zografou Campus GR 157 73, Athens (Greece)

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.

• OSTI ID: 21541496
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 8 Vol. 83; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPARATIVE EVALUATIONS
CONFIGURATION
ENERGY RANGE
EVALUATION
GRAVITATION
MATHEMATICAL SOLUTIONS
METRICS
RELATIVISTIC RANGE
SPACE-TIME
SPHERICAL CONFIGURATION
SYMMETRY