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arXiv 1609.09515hep-thgr-qc
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候选部分无质量双度量引力的规范对称性和整体对称性

Gauge and global symmetries of the candidate partially massless bimetric gravity

Luis Apolo, S. F. Hassan, Anders Lundkvist

摘要:

在本文中,我们研究了一个特殊的幽灵自由双度量理论,表现出部分无质量(PM)对称性在二次。在这个量级上,理论的全局SO(1,4)对称性增强为SO(1,5)对称性。我们表明,这种全球对称性变得不一致,在立方阶,与以前的计算。此外,我们发现,该理论的PM对称性不能扩展到三阶以上的PM领域。更重要的是,它表明,PM对称性不能扩展到四阶在任何理论与一个无质量和一个有质量的自旋2场。

英文摘要:

In this paper we investigate a particular ghost-free bimetric theory that exhibits the partially massless (PM) symmetry at quadratic order. At this order the global SO(1,4) symmetry of the theory is enhanced to SO(1,5). We show that this global symmetry becomes inconsistent at cubic order, in agreement with a previous calculation. Furthermore, we find that the PM symmetry of this theory cannot be extended beyond cubic order in the PM field. More importantly, it is shown that the PM symmetry cannot be extended to quartic order in any theory with one massless and one massive spin-2 fields.

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