SINGULARITY STRUCTURE OF A MODEL QUARK PROPAGATOR

被引：94

作者：

BURDEN, CJ

ROBERTS, CD

WILLIAMS, AG

机构：

[1] ARGONNE NATL LAB,DIV PHYS,ARGONNE,IL 60439

[2] FLORIDA STATE UNIV,DEPT PHYS,TALLAHASSEE,FL 32306

[3] FLORIDA STATE UNIV,SUPERCOMP COMPUTAT RES INST,TALLAHASSEE,FL 32306

来源：

PHYSICS LETTERS B | 1992年 / 285卷 / 04期

关键词：

D O I：

10.1016/0370-2693(92)91516-C

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A model Schwinger-Dyson equation for the fermion self-energy is solved for both spacelike and timelike momenta. The singularity structure of the quark propagator obtained as a solution of this equation is studied. It is found to be an entire function (except for an essential singularity at p2 = - infinity; timelike in our metric): a property that may be indicative of confinement. The absence of singularities is a non-trivial feature that arises only as a result of the cancellation of zeros in the numerator and denominator of the propagator.

引用

页码：347 / 353

页数：7

共 33 条

[1] CHIRAL-SYMMETRY BREAKING IN QCD .2. RUNNING COUPLING-CONSTANT [J].