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 language | English |
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Article number | 065206 |
Number of pages | 7 |
Journal | Physical Review C |
Volume | 67 |
Issue number | 6 |
DOIs | |
Publication status | Published - Jun 2003 |
Externally published | Yes |