BRST Lagrangian construction for spin-2 field in Einstein space
arXiv:0912.0611 · doi:10.1016/j.physletb.2010.01.065
Abstract
We explore a new possibility of BRST construction in higher spin field theory to obtain a consistent Lagrangian for massive spin-2 field in Einstein space. Such approach automatically leads to gauge invariant Lagrangian with suitable auxiliary and Stuckelberg fields. It is proved that in this case a propagation of spin-2 field is hyperbolic and causal. Also we extend notion of partial masslessness for spin-2 field in the background under consideration.
13 pages; V2 Minor changes, references added; V3 Minor changes including the title, references added, version accepted for publication in PLB
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