The superconducting order parameter and gauge dependence
| dc.creator | de Calan, Claude | |
| dc.creator | Nogueira, Flavio S. | |
| dc.date | 1999-05-19 | |
| dc.date.accessioned | 2026-07-07T03:13:30Z | |
| dc.date.available | 2026-07-07T03:13:30Z | |
| dc.description | The gauge dependence of the renormalization group functions of the Ginzburg-Landau model is investigated. The analysis is done by means of the Ward-Takahashi identities. After defining the superconducting order parameter, it is shown that its exponent $β$ is in fact gauge independent. This happens because in d=3 the Landau gauge is the only gauge having a physical meaning, a property not shared by the four-dimensional model where any gauge choice is possible. The analysis is done in both the context of the $ε$-expansion and in the fixed dimension approach. It is pointed out the differences that arise in both of these approaches concerning the gauge dependence. | |
| dc.description | RevTex, 12 pages, 1 figure | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9905276 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9905276 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/29320 | |
| dc.subject | Superconductivity | |
| dc.title | The superconducting order parameter and gauge dependence | |
| dc.type | text |