Concerning the quark condensate

Kurt Langfeld, H Markum, R. Pullirsch, C.D. Roberts, S.M. Schmidt

Research output: Contribution to journalArticlepeer-review

Abstract

A continuum expression for the trace of the massive dressed-quark propagator is used to explicate a connection between the infrared limit of the QCD Dirac operator’s spectrum and the quark condensate appearing in the operator product expansion. This connection is verified via comparison with a lattice-QCD simulation. The pseudoscalar vacuum polarization provides a good approximation to the condensate over a larger range of current-quark masses.
Original languageEnglish
Article number065206
Number of pages7
JournalPhysical Review C
Volume67
Issue number6
DOIs
Publication statusPublished - Jun 2003
Externally publishedYes

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