Recognition: unknown
Concerning the quark condensate
classification
⚛️ nucl-th
hep-lathep-ph
keywords
condensateconnectionoperatorquarkappearingapproximationcomparisonconcerning
read the original 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, and the connection is verified via comparison with a lattice-QCD simulation. The pseudoscalar vacuum polarisation provides a good approximation to the condensate over a larger range of current-quark masses.
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