Concepts such as matching, renormalization, the operator product expansion, power counting, and running with the renormalization group will be discussed. 我们将讨论诸如匹配,重整化,算符乘积展开,幂次计数,和重整化群跑动等概念。
Understandings of this x_p rescaling from both the free field operator product expansion ( OPE ) and the ordinary OPE are also given, indicating that it is likely a higher order effect in the coefficient functions; i.e., it does not belong to the higher twist effect. 本文也给出了从自由场算符乘积展开(OPE)方法和一般OPE方法对xp重新标度的理解,指出它很可能是光锥展开系数中的一种高阶效应而不属于高挠度效应。
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