Massive gravity: Exorcising the ghost

Lasma Alberte; Ali H. Chamseddin; Viatcheslav Mukhanov

doi:10.1007/JHEP04(2011)004

Massive gravity: Exorcising the ghost

Lasma Alberte, Ali H. Chamseddin, Viatcheslav Mukhanov

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

We consider Higgs massive gravity [1, 2] and investigate whether a nonlinear ghost in this theory can be avoided. We show that although the theory considered in [10, 11] is ghost free in the decoupling limit, the ghost nevertheless reappears in the fourth order away from the decoupling limit. We also demonstate that there is no direct relation between the value of the Vainshtein scale and the existence of nonlinear ghost. We discuss how massive gravity should be modified to avoid the appearence of the ghost.

Original language	English
Article number	4
Journal	Journal of High Energy Physics
Volume	2011
Issue number	4
DOIs	https://doi.org/10.1007/JHEP04(2011)004
State	Published - 1 Apr 2011
Externally published	Yes

Keywords

Classical theories of gravity
Gauge symmetry
Spontaneous symmetry breaking

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1007/JHEP04(2011)004

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abstract = "We consider Higgs massive gravity [1, 2] and investigate whether a nonlinear ghost in this theory can be avoided. We show that although the theory considered in [10, 11] is ghost free in the decoupling limit, the ghost nevertheless reappears in the fourth order away from the decoupling limit. We also demonstate that there is no direct relation between the value of the Vainshtein scale and the existence of nonlinear ghost. We discuss how massive gravity should be modified to avoid the appearence of the ghost.",

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AB - We consider Higgs massive gravity [1, 2] and investigate whether a nonlinear ghost in this theory can be avoided. We show that although the theory considered in [10, 11] is ghost free in the decoupling limit, the ghost nevertheless reappears in the fourth order away from the decoupling limit. We also demonstate that there is no direct relation between the value of the Vainshtein scale and the existence of nonlinear ghost. We discuss how massive gravity should be modified to avoid the appearence of the ghost.

KW - Classical theories of gravity

KW - Gauge symmetry

KW - Spontaneous symmetry breaking

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Massive gravity: Exorcising the ghost

Abstract

Keywords

ASJC Scopus subject areas

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