Quark Condensate and Effective Action from Dyson--Schwinger Equations

Details Quark Condensate and Effective Action from Dyson--Schwinger Equations Quark Condensate and Effective Action from Dyson--Schwinger Equations

2009-12-09

arxiv.org/abs/0912.1753v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 10 figures

Scientific paper

We obtain the QCD quark condensate from consideration of unquenched quark
dynamics in Dyson-Schwinger gluon vacuum. We consider the non-local extension
of the condensate and determine the quark virtuality. We also obtain the
condensate-driven contribution of the non-perturbative QCD to Euler--Heisenberg
Lagrangian of QED in external electromagnetic fields.

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