Perturbative QCD with quark and gluon condensates

被引：0

作者：

Hoyer, P ^{[1
]}

机构：

[1] Univ Helsinki, Dept Phys Sci, FIN-00014 Helsinki, Finland

来源：

ICHEP 2002, PROCEEDINGS | 2003年

关键词：

D O I：

10.1016/S0920-5632(02)02212-0

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The quark <(psi) over bar psi> and gluon (FmuvFmuv) vacuum expectation values are non-vanishing at low orders in alpha(s) when the perturbative ground state includes quark and gluon pairs. This offers possibilities of studying the effects of a non-trivial vacuum using formally exact perturbative methods. The QCD Feynman rules are modified only for the free, on-shell quark and gluon propagators at zero four-momentum. Gauge and lorentz invariance is maintained, while chiral symmetry is spontaneously broken by the ground state.

引用

页码：367 / 369

页数：3

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