2009/01/31 by Eric A. Bergshoeff, Olaf Hohm, Paul K. Townsend · 3 citations
Physics and Astronomy · #hep-th #gr-qc
paper · pdf · doi:10.1103/physrevlett.102.201301
published as Phys.Rev.Lett.102:201301,2009 · Minor corrections plus a further correction to discussion of supersymmetry in adS vacua, Version to be published
arxiv created 2009/05/05 · arxiv updated 2009/12/01
A particular higher-derivative extension of the Einstein-Hilbert action in three spacetime dimensions is shown to be equivalent at the linearized level to the (unitary) Pauli-Fierz action for a massive spin-2 field. A more general model, which also includes `topologically-massive' gravity as a special case, propagates the two spin 2 helicity states with different masses. We discuss the extension to massive \cal N-extended supergravity, and we present a `cosmological' extension that admits an anti-de Sitter vacuum.