Gauge-invariant critical exponents for the Ginzburg-Landau model.
The critical behavior of the Ginzburg-Landau model is described in a manifestly gauge-invariant manner. The gauge-invariant correlation-function exponent is computed to first order in the 4-d and 1/n expansion, and found to agree with the ordinary exponent obtained in the covariant gauge, with the parameter alpha=1-d in the gauge-fixing term ( partial differential (mu)A(mu))(2)/2alpha.
Kleinert
H
H
Freie Universität Berlin, Institut für Theoretische Physik, Arnimallee 14, D-14195 Berlin.
Schakel
Adriaan M J
AM