A Gauge-Fixing Action for Lattice Gauge Theories
Abstract
We present a lattice gauge-fixing action Sgf with the following properties: (a) Sgf is proportional to the trace of (Σμ ∂μ Aμ)2, plus irrelevant terms of dimension six and higher; (b) Sgf has a unique absolute minimum at Ux,μ=I. Noting that the gauge-fixed action is not BRST invariant on the lattice, we discuss some important aspects of the phase diagram.
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