We show that the ξ-limiting regularization process of Lee and Yang can be recognized as a nonlinear gauge condition in the general non-Abelian gauge theory. The ξ-limiting process, however, differs from the general gauge-invariant formulation of the spontaneously broken gauge theories for finite ξ. Some of the problems related to the implementation of general gauge conditions are also briefly discussed.
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Kazuo Fujikawa (1973) studied this question.
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