Single Scale Analysis of Many Fermion Systems. Part 2: The First Scale
Joel Feldman, Horst Knoerrer, Eugene Trubowitz
Abstract
The first renormalization group map arising from the momentum space decomposition of a weakly coupled system of fermions at temperature zero differs from all subsequent maps. Namely, the component of momentum dual to temperature may be arbitrarily large - there is no ultraviolet cutoff. The methods of Part 1 are supplemented to control this special case.
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