On gauge-invariant Green function in 2+1 dimensional QED
| dc.creator | Ye, Jinwu | |
| dc.date | 2002-05-20 | |
| dc.date | 2003-01-04 | |
| dc.date.accessioned | 2026-07-07T12:16:38Z | |
| dc.date.available | 2026-07-07T12:16:38Z | |
| dc.description | Both the gauge-invariant fermion Green function and gauge-dependent conventional Green function in $ 2+1 $ dimensional QED are studied in the large $ N $ limit. In temporal gauge, the infra-red divergence of gauge-dependent Green function is found to be regulariable, the anomalous dimension is found to be $ η= \frac{64}{3 π^{2} N} $. This anomalous dimension was argued to be the same as that of gauge-invariant Green function. However, in Coulomb gauge, the infra-red divergence of the gauge-dependent Green function is found to be un-regulariable, anomalous dimension is even not defined, but the infra-red divergence is shown to be cancelled in any gauge-invariant physical quantities. The gauge-invariant Green function is also studied directly in Lorentz covariant gauge and the anomalous dimension is found to be the same as that calculated in temporal gauge. | |
| dc.description | 8 pages, 6 figures, to appear in Phys. Rev. B | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0205417 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0205417 | |
| dc.identifier | Phys.Rev.B67:115104,2003 | |
| dc.identifier | doi:10.1103/PhysRevB.67.115104 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/211863 | |
| dc.subject | Condensed Matter | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | On gauge-invariant Green function in 2+1 dimensional QED | |
| dc.type | text |