Abstract
It is shown that there exists a class of nongauge local symmetry in gravity. It is the combination of the known gauge symmetries andδ off shell transformation.δ off shell is the transformation which vanishes on shell.δ off shell invariance imposes some restriction on model Lagrangians besides gauge symmetry, though it does not reduce the physical degrees of freedom.
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Kamimura, K., Fukuyama, T. Nongauge local symmetry in gravity. Gen Relat Gravit 17, 869–874 (1985). https://doi.org/10.1007/BF00773683
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DOI: https://doi.org/10.1007/BF00773683