Strong coupling in extended Horava-Lifshitz gravity

Details Strong coupling in extended Horava-Lifshitz gravity Strong coupling in extended Horava-Lifshitz gravity

2009-11-06

arxiv.org/abs/0911.1299v4

Phys.Lett.B685:197-200,2010

Physics

High Energy Physics

High Energy Physics - Theory

4 pages; v2: minor changes and references added; v3: clarification regarding the strong coupling scale added; v4: version acce

Scientific paper

10.1016/j.physletb.2010.01.054

An extension of Horava-Lifshitz gravity was recently proposed in order to
address the pathological behavior of the scalar mode all previous versions of
the theory exhibit. We show that even in this new extension the strong coupling
persists, casting doubts on whether such a model can constitute an interesting
alternative to general relativity (GR).

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