Weyl-invariant higher curvature gravity theories in n dimensions

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2012-03-12

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Tanhayi, M. Reza
Dengiz, Suat
Tekin, Bayram

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We study the particle spectrum and the unitarity of the generic n-dimensional Weyl-invariant quadratic curvature gravity theories around their (anti-)de Sitter and flat vacua. Weyl symmetry is spontaneously broken in (anti-)de Sitter and radiatively broken at the loop level in flat space. Save the three-dimensional theory (which is the Weyl-invariant extension of the new massive gravity), the graviton remains massless and the unitarity requires that the only viable Weyl-invariant quadratic theory is the Weyl-invariant extension of the Einstein-Gauss-Bonnet theory. The Weyl gauge field, on the other hand, becomes massive. The symmetry breaking scale fixes all the dimensionful parameters in the theory.

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https://hdl.handle.net/11511/34964

Journal

PHYSICAL REVIEW D

DOI

https://doi.org/10.1103/physrevd.85.064016

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Department of Physics, Article

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Citation Formats

M. R. Tanhayi, S. Dengiz, and B. Tekin, “Weyl-invariant higher curvature gravity theories in n dimensions,” PHYSICAL REVIEW D, pp. 0–0, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/34964.