QCD Sum Rule External Field Approach and Vacuum Susceptibilities
QCD Sum Rule External Field Approach and Vacuum Susceptibilities
摘要
Based on QCD sum rule three-point and two-point external field formulas respectively, the vector vacuumsusceptibilities are calculated at the mean-field level in the framework of the global color symmetry model. It is shownthat the above two approaches of determination of the vector vacuum susceptibility may lead to different results. Thereason of this contradiction is discussed.
基金
国家自然科学基金
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