Gauge-invariant nonlocal quark condensates in QCD: a new interpretation of the lattice results

Abstract

We study the asymptotic short-distance behaviour as well as the asymptotic large-distance behaviour of the gauge-invariant quark-antiquark nonlocal condensates in QCD. A comparison of some analytical results with the available lattice data is performed.

Comments: Talk given at the ``XVIIth International Symposium on Lattice Field Theory'', Pisa (Italy), June 29th - July 3rd, 1999 (LATTICE 99); 3 pages, LaTeX file, uses ``espcrc2.sty''; a mistake in Eq. (17) corrected plus other minor changes