Asymptotically flat spacetimes in 3D bigravity

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Abstract

We report that a class of three-dimensional bimetric theories contains asymptotically flat solutions. These spacetimes can be cast in a set of asymptotic conditions at null infinity which are preserved under the infinite-dimensional Bondi-Metzner-Sachs group. Moreover, the algebra of the canonical generators exhibits a central extension. The possibility that these solutions describe regular black holes is also discussed.

Original languageEnglish
Article number084045
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume86
Issue number8
DOIs
StatePublished - 22 Oct 2012
Externally publishedYes

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