Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2003-01-08
Phys.Rev.C67:065206,2003
Physics
Nuclear Physics
Nuclear Theory
7 pages, LaTeX2e, revtex4
Scientific paper
10.1103/PhysRevC.67.065206
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.
Langfeld Kurt
Markum Harald
Pullirsch Rainer
Roberts Christopher D.
Schmidt Steve M.
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