On IR solutions in Horava gravity theories

Details On IR solutions in Horava gravity theories On IR solutions in Horava gravity theories

2009-04-23

arxiv.org/abs/0904.3604v2

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, latex, references added

Scientific paper

In this note we search for large distance solutions of Horava gravity. In the case of the "detailed balance" action, gravity solutions asymptote to IR only above the cosmological constant ($\sim$horizon) scale. However, if one adds IR dominant terms $\alpha R^{(3)}+\beta \Lambda_W$, one can recover general relativity solutions on usual scales in the real Universe, provided one fine-tunes the cosmological constant, reobtaining the usual cosmological constant problem. We comment on pp wave solutions, in order to gain insight into the relativistic properties of the theory.

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