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High Energy Physics - Theory

arXiv:1104.1373 (hep-th)
[Submitted on 7 Apr 2011 (v1), last revised 1 Jul 2011 (this version, v3)]

Title:Exact Solution to the "Auxiliary Extra Dimension" Model of Massive Gravity

Authors:S. F. Hassan, Rachel A. Rosen (Stockholm U.)
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Abstract:The "Auxiliary Extra Dimension" model was proposed in order to provide a geometrical interpretation to modifications of general relativity, in particular to non-linear massive gravity. In this context, the theory was shown to be ghost free to third order in perturbations, in the decoupling limit. In this work, we exactly solve the equation of motion in the extra dimension, to obtain a purely 4-dimensional theory. Using this solution, it is shown that the ghost appears at the fourth order and beyond. We explore potential modifications to address the ghost issue and find that their consistent implementation requires going beyond the present framework.
Comments: v3:8 pages, LaTex, a comment and a reference added, version to appear in PLB
Subjects: High Energy Physics - Theory (hep-th)
Cite as: arXiv:1104.1373 [hep-th]
  (or arXiv:1104.1373v3 [hep-th] for this version)
  https://doi.org/10.48550/arXiv.1104.1373
Journal reference: Phys.Lett.B702:90-93,2011
Related DOI: https://doi.org/10.1016/j.physletb.2011.06.056

Submission history

From: Sayed Fawad Hassan [view email]
[v1] Thu, 7 Apr 2011 16:32:06 UTC (9 KB)
[v2] Tue, 19 Apr 2011 15:56:43 UTC (9 KB)
[v3] Fri, 1 Jul 2011 15:45:07 UTC (9 KB)
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