BRST symmetry for a torus knot

@article{Pandey2017BRSTSF,
  title={BRST symmetry for a torus knot},
  author={Vipul Kumar Pandey and Bhabani Prasad Mandal},
  journal={Europhysics Letters},
  year={2017},
  volume={119}
}
We develop BRST symmetry for the first time for a particle on the surface of a torus knot by analyzing the constraints of the system. The theory contains 2nd-class constraints and has been extended by introducing the Wess-Zumino term to convert it into a theory with first-class constraints. BFV analysis of the extended theory is performed to construct BRST/anti-BRST symmetries for the particle on a torus knot. The nilpotent BRST/anti-BRST charges which generate such symmetries are constructed… 
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