Conformal Field Theory Approach to Quantum Impurity Problems

Details Conformal Field Theory Approach to Quantum Impurity Problems Conformal Field Theory Approach to Quantum Impurity Problems

1993-11-23

arxiv.org/abs/cond-mat/9311054v2

Physics

Condensed Matter

Latex, 15 pages, LaTex, UBCTP-93-25, hard copy of figures available from maxwell@physics.ubc.ca

Scientific paper

A brief review is given of a new method for studying the critical behavior of quantum impurity problems, based on conformal field theory techniques, which I developed with Andreas Ludwig. Some results on the overscreened Kondo problem are reviewed. It is shown that the simple open and periodic fixed points, which occur in quantum spin chain impurity models, are related to each other by fusion.

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