Lattice BRST without Neuberger 0/0 problem
Lorenz von Smekal, Manon Bischoff
TL;DR
This paper demonstrates a novel approach to covariant gauge-fixing on finite lattices using SUSY quantum mechanics and topological quantum field theory, avoiding the Neuberger 0/0 problem.
Contribution
It introduces a method leveraging SUSY and topological QFT to perform BRST gauge-fixing without encountering the Neuberger 0/0 problem.
Findings
Successful covariant gauge-fixing on a finite lattice
Avoidance of the Neuberger 0/0 problem
Application of SUSY quantum mechanics in lattice gauge theories
Abstract
We illustrate in a simple toy model how the methods of SUSY quantum mechanics and topological quantum field theory can be used for covariant gauge-fixing with unbroken BRST symmetry on a finite lattice.
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