Braneworld solutions from scalar field in bimetric theory

Abstract

We investigate the presence of braneworld solutions in a bimetric theory, with gravity and the scalar field coupling differently. We consider a non-standard model, with a Cuscuton-like scalar field, and we show how to generate braneworld solutions in this new scenario. In particular, we found no gravitational instabilities for the braneworld solutions.

8 pages, no figures, Latex. Version to appear in PRD

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