Causality and the renormalization group |
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| Authors: | D. V. Shirkov |
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| Affiliation: | (1) Joint Institute for Nuclear Research, Dubna, USSR |
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| Abstract: | We suppose that for the invariant coupling constant (ICC) the spectral representation of the Källen-Lehmann type is valid. By combining this conjecture with the general solution of the functional renormalization group (RG) equation it is possible to analyze the type of singularity in the coupling constant at g=0. For logarithmic models it is of the form exp (-1/g). |
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