Derivative Expansion of the Exact Renormalization Group


The functional flow equations for the Legendre effective action, with respect to changes in a smooth cutoff, are approximated by a derivative expansion; no other approximation is made. This results in a set of coupled non-linear differential equations. The corresponding differential equations for a fixed point action have at most a countable number of… (More)


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@inproceedings{Morris1994DerivativeEO, title={Derivative Expansion of the Exact Renormalization Group}, author={Tim Morris}, year={1994} }