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Phys. Rev. Lett. 101, 171303 (2008) [4 pages]

Non-Pauli-Fierz Massive Gravitons

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Gia Dvali1,2, Oriol Pujolàs2, and Michele Redi3
1CERN, Theory Division, CH-1211 Geneva 23, Switzerland
2Center for Cosmology and Particle Physics, New York University, New York, New York 10003, USA
3Institut de Théorie des Phénomènes Physiques, EPFL, CH-1015, Lausanne, Switzerland

Received 7 July 2008; published 24 October 2008

We study general Lorentz invariant theories of massive gravitons. We show that, contrary to the standard lore, there exist consistent theories where the graviton mass term violates Pauli-Fierz structure. For theories where the graviton is a resonance, this does not imply the existence of a scalar ghost if the deviation from a Pauli-Fierz structure becomes sufficiently small at high energies. These types of mass terms are required by any consistent realization of the Dvali-Gabadadze-Porrati model in higher dimension.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.171303
DOI:
10.1103/PhysRevLett.101.171303
PACS:
04.60.−m, 11.10.Kk, 11.10.Lm, 11.30.Cp