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Coarse graining and a new strategy for renormalization

Ji-Feng Yang

hep-pharXiv:hep-ph/0212208

Abstract

We present the natural arguments for the rationality of a recently proposed simple approach for renormalization which is based solving differential equations. The renormalization group equation is also derived in a natural way and recognized as a decoupling theorem of the UV modes that underlie a QFT. This new strategy has direct implications to the scheme dependence problem.

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