The Calculation of Vacuum Properties from the Global Color Symmetry   Model
  A modified method for calculating the non-perturbative quark vacuum condensates from the global color symmetry model is derived. Within this approach it is shown that the vacuum condensates are free of ultraviolet divergence which is different from previous studies. As a special, the two-quark condensate and the mixed quark-gluon condensate are calculated. A comparision with the results of the other nonperturbative QCD approaches is given. 
Hong-shi Zong, Jia-lun Ping, Hong-ting Yang, Xiao-fu Lu, and Fan Wang