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VOLUME 43 | ISSUE 12 | PAGE 730
"Irreversibility" of the flux of the renormalization group in a 2D field theory
There exists a function (g) of the coupling constant g in a 2D renorrnalizable field theory which decreases monotonically under the influence of a renormalization-group transformation. This function has constant values only at fixed points, where is the same as the central charge of a Virasoro algebra of the corresponding conformal field theory.




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