Reduced massive gravity with two Stückelberg fields

@article{Alberte2013ReducedMG,
  title={Reduced massive gravity with two St{\"u}ckelberg fields},
  author={Lasma Alberte and Andrei Khmelnitsky},
  journal={Physical Review D},
  year={2013},
  volume={88},
  pages={064053}
}
We consider the non-linear massive gravity as a theory of a number of St\"uckelberg scalar fields minimally coupled to the Einstein-Hilbert gravity and argue that the counting of degrees of freedom can be done for scalar theory and gravity separately. In this paper we investigate the system with only two St\"uckelberg scalar fields. In this case we find the analytic expression for the determinant of the kinetic matrix of the scalar field Lagrangian and perform the full constraint analysis. In 1… 

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