Journal
PHYSICAL REVIEW LETTERS
Volume 102, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.201301
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Funding
- EPSRC
- EPSRC [EP/C544951/1] Funding Source: UKRI
- STFC [ST/G000581/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/C544951/1] Funding Source: researchfish
- Science and Technology Facilities Council [ST/G000581/1] Funding Source: researchfish
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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 N-extended supergravity, and we present a cosmological extension that admits an anti-de Sitter vacuum.
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