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High Energy Physics - Theory

arXiv:1109.3515 (hep-th)
[Submitted on 16 Sep 2011 (v1), last revised 3 Apr 2012 (this version, v2)]

Title:Bimetric Gravity from Ghost-free Massive Gravity

Authors:S. F. Hassan, Rachel A. Rosen
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Abstract:Generically, non-linear bimetric theories of gravity suffer from the same Boulware-Deser ghost instability as non-linear theories of massive gravity. However, recently proposed theories of massive gravity have been shown to be ghost-free. These theories are formulated with respect to a flat, non-dynamical reference metric. In this work we show that it is possible to give dynamics to the reference metric in such a way that the consistency of the theory is maintained. The result is a non-linear bimetric theory of a massless spin-2 field interacting with a massive spin-2 field that is free of the Boulware-Deser ghost. To our knowledge, this is the first construction of such a ghost-free bimetric theory.
Comments: results extended, version accepted for publication
Subjects: High Energy Physics - Theory (hep-th)
Cite as: arXiv:1109.3515 [hep-th]
  (or arXiv:1109.3515v2 [hep-th] for this version)
  https://doi.org/10.48550/arXiv.1109.3515
Related DOI: https://doi.org/10.1007/JHEP02%282012%29126

Submission history

From: Rachel A Rosen [view email]
[v1] Fri, 16 Sep 2011 01:51:46 UTC (10 KB)
[v2] Tue, 3 Apr 2012 16:17:42 UTC (11 KB)
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