Nonperturbative corrections of quark and gluon condensates to QCD inspired quark potentials |
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| Authors: | J.J. Yang H.Q. Shen G.L. Li T. Huang P.N. Shen |
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| Affiliation: | (1) Department of Physics, Nanjing Normal University, Nanjing 210097, China , CN;(2) China Center of Advanced Science and Technology (World Laboratory), P.O.Box 8730, Beijing 100080, China , CN;(3) Institute of High Energy Physics, Academia Sinica, P.O.Box 918(4), Beijing 100039, China , CN |
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| Abstract: | We adopt the Lorentz gauge to derive the non-local two-gluon vacuum expectation value (VEV) with translational invariance. By means of the obtained non-local two-gluon VEV, the leading nonperturbative QCD corrections to one gluon exchange quark-quark, quark-antiquark and pair-excitation potentials are given by employing non-vanishing vacuum condensates of quarks and gluons to modify the free gluon propagator. The linear, cubic and Yukawa-type terms in quark-quark potential appear automatically. In the pair-excitation potential with , the linear, square and cubic terms arise from the nonzero quark and gluon condensates. Received: 22 June 1998 / Revised version: 10 August 1998 / Published online: 29 October 1998 |
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