More on the properties of the first Gribov region in Landau gauge

Understand

Complete gauge-fixing beyond perturbation theory in non-Abelian gauge theories is a non-trivial problem.

• This is particularly evident in covariant gauges, where the Gribov-Singer ambiguity gives an explicit formulation of the problem.
• In practice, this is a problem if gauge-dependent quantities between different methods, especially lattice and continuum methods, should be compared: Only when treating the Gribov-Singer ambiguity in the same way is the comparison meaningful.
• To provide a better basis for such a comparison the structure of the first Gribov region in Landau gauge, a subset of all possible gauge copies satisfying the perturbative Landau gauge condition, will be investigated.