Research Foundation of Southern California, 8861 Villa La Jolla Drive #13595, La Jolla, CA, 92037
*Corresponding author: Simon Davis Research Foundation of Southern California, 8861 Villa La Jolla Drive #13595, La Jolla, CA, 92037 E-mail: sbdavis@resfdnsca.org
PACS: 11.25.Tq, 12.38.Lg, 12.39.Mk, 12.40.Yx
The nonperturbative contribution to the correlation of gluon field strengths is computed within the field theory limit of a string diagrammatic expansion.
Theta angle, instantons, four gluon amplitude, nonperturbative propagator
