In this note we briefly review the present status of cosmology in massive bigravity. The bottom line is that no stable FLRW cosmology exists at the leading order, showing a breakdown of cosmological perturbation theory much earlier than in GR. A possible way out could be a non-linear treatment.

On the cosmology of massive bigravity

PILO, LUIGI
2015-01-01

Abstract

In this note we briefly review the present status of cosmology in massive bigravity. The bottom line is that no stable FLRW cosmology exists at the leading order, showing a breakdown of cosmological perturbation theory much earlier than in GR. A possible way out could be a non-linear treatment.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11697/37436
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