Degravitation of the Cosmological Constant in Bigravity

Abstract

In this article the phenomenon of degravitation of the cosmological constant is studied in the framework of bigravity. It is demonstrated that despite a sizable value of the cosmological constant its gravitational effect can be only mild. The bigravity framework is chosen for this demonstration as it leads to a consistent, ghost-free theory of massive gravity. We show that degravitation takes place in the limit where the physical graviton is dominantly a gauge invariant metric combination. We present and discuss several phenomenological consequences expected in this regime.

17 pages; v2 contains extended discussion on more general solutions; content matches published version

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Cited by in corpus (6)

• Gravitational Wave Oscillations in Bigravity
• Dark matter scenarios with multiple spin-2 fields
• Long Range Effects in Gravity Theories with Vainshtein Screening
• Combining cosmological and local bounds on bimetric theory
• Vainshtein Screening in Bimetric Cosmology
• Probing alternative cosmologies through the inverse distance ladder