Strong coupling in extended Horava-Lifshitz gravity

Antonios Papazoglou (Portsmouth U.; DAMTP); ICG); Thomas P. Sotiriou (Cambridge U.

arxiv: 0911.1299 · v4 · submitted 2009-11-06 · ✦ hep-th · gr-qc

Strong coupling in extended Horava-Lifshitz gravity

Antonios Papazoglou (Portsmouth U. , ICG) , Thomas P. Sotiriou (Cambridge U. , DAMTP) This is my paper

classification ✦ hep-th gr-qc

keywords couplingextensiongravityhorava-lifshitzstrongaddressalternativebehavior

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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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