Gauge-invariant critical exponents for the Ginzburg-Landau model

Details Gauge-invariant critical exponents for the Ginzburg-Landau model Gauge-invariant critical exponents for the Ginzburg-Landau model

2002-09-18

arxiv.org/abs/cond-mat/0209449v1

Phys. Rev. Lett. 90, 097001 (2003)

Physics

Condensed Matter

4 pages, no figures

Scientific paper

10.1103/PhysRevLett.90.097001

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 $(\partial_\mu A_\mu)^2 /2 \alpha$.

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