Topology and pion correlators -: a study in the Nf=2 Schwinger model

被引：3

作者：

Dürr, S ^{[1
]}

机构：

[1] Paul Scherrer Inst, Theory Grp, CH-5232 Villigen, Switzerland

来源：

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2002年 / 106卷

关键词：

D O I：

10.1016/S0920-5632(01)01789-3

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

I readdress the issue whether the topological charge of the gauge background has an influence on a hadronic observable. To this end pion correlators in the Schwinger model with 2 dynamical flavours are determined on subensembles with a fixed topological charge. It turns out that the answer depends on a specific function of the sea-quark mass and the box volume which is in close analogy to the Leutwyler-Smilga parameter in full QCD.

引用

页码：598 / 600

页数：3