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arXiv · 2008.06817

BRST Analysis and BFV Quantization of the Generalized Quantum Rigid Rotor

Ronaldo Thibes
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Abstract

We identify a strong similarity among several distinct originally second-class systems, including both mechanical and field theory models, which can be naturally described in a gauge-invariant way. The canonical structure of such related systems is encoded into a gauge-invariant generalization of the quantum rigid rotor. We pursue the BRST symmetry analysis and the BFV functional quantization for the mentioned gauge-invariant version of the generalized quantum rigid rotor. We obtain different equivalent effective actions according to specific gauge-fixing choices, showing explicitly their BRST symmetries. We apply and exemplify the ideas discussed to two particular models, namely, motion along an elliptical path and the $O(N)$ nonlinear sigma model, showing that our results reproduce and connect previously unrelated known gauge-invariant systems.

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Ronaldo Thibes. 2020-08-16. BRST Analysis and BFV Quantization of the Generalized Quantum Rigid Rotor. https://doi.org/10.1142/s0217732321501169

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