dc.contributor.author | Bashir, A | |
dc.contributor.author | Pennington, MR | |
dc.contributor.author | Kizilersu, A | |
dc.date.accessioned | 2021-03-06T20:21:43Z | |
dc.date.available | 2021-03-06T20:21:43Z | |
dc.date.issued | 1998 | |
dc.identifier.citation | Bashir A., Kizilersu A., Pennington M., "Nonperturbative three-point vertex in massless quenched QED and perturbation theory constraints", PHYSICAL REVIEW D, cilt.57, ss.1242-1249, 1998 | |
dc.identifier.issn | 0556-2821 | |
dc.identifier.other | av_f9ef09e4-cb3c-4a61-a810-f67185468dfc | |
dc.identifier.other | vv_1032021 | |
dc.identifier.uri | http://hdl.handle.net/20.500.12627/163663 | |
dc.identifier.uri | https://doi.org/10.1103/physrevd.57.1242 | |
dc.description.abstract | Dong, Munczek, and Roberts have shown how the full 3-point vertex that appears in the Schwinger-Dyson equation for the fermion propagator can be expressed in terms of a constrained function W-1 in massless quenched QED. However, this analysis involved two key assumptions: that the fermion anomalous dimension vanishes in the Landau gauge and that the transverse vertex has a simplified dependence on momenta. Here we remove these assumptions and find the general form for a new constrained function U-1 that ensures the multiplicative renormalizability of the fermion propagator nonperturbatively. We then study the restriction imposed on U-1 by recent perturbative calculations of the vertex and compute its leading logarithmic expansion. Since U-1 should reduce to this expansion in the weak coupling regime, this should serve as a guide to its nonperturbative construction. We comment on the perturbative realization of the constraints on U-1. | |
dc.language.iso | eng | |
dc.subject | Fizik | |
dc.subject | Temel Bilimler | |
dc.subject | Astronomi ve Astrofizik | |
dc.subject | Temel Parçacıklar ve Alanlar | |
dc.subject | FİZİK, PARTİKLER VE ALANLAR | |
dc.subject | Temel Bilimler (SCI) | |
dc.subject | Uzay bilimi | |
dc.subject | ASTRONOMİ VE ASTROFİZİK | |
dc.title | Nonperturbative three-point vertex in massless quenched QED and perturbation theory constraints | |
dc.type | Makale | |
dc.relation.journal | PHYSICAL REVIEW D | |
dc.contributor.department | , , | |
dc.identifier.volume | 57 | |
dc.identifier.issue | 2 | |
dc.identifier.startpage | 1242 | |
dc.identifier.endpage | 1249 | |
dc.contributor.firstauthorID | 120356 | |