${\bar {q}}q$ condensate for light quarks beyond the chiral limit

Details ${\bar {q}}q$ condensate for light quarks beyond the chiral limit ${\bar {q}}q$ condensate for light quarks beyond the chiral limit

2006-12-06

arxiv.org/abs/hep-ph/0612061v1

Phys.Lett.B645:167-172,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 8 figures

Scientific paper

10.1016/j.physletb.2006.12.055

We determine the ${\bar{q}}q$ condensate for quark masses from zero up to that of the strange quark within a phenomenologically successful modelling of continuum QCD by solving the quark Schwinger-Dyson equation. The existence of multiple solutions to this equation is the key to an accurate and reliable extraction of this condensate using the operator product expansion. We explain why alternative definitions fail to give the physical condensate.

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