Abelian bosonization approach to quantum impurity problems

Details Abelian bosonization approach to quantum impurity problems Abelian bosonization approach to quantum impurity problems

1996-12-02

arxiv.org/abs/cond-mat/9612029v2

Physics

Condensed Matter

Strongly Correlated Electrons

12 pages, REVTEX, 1 Table, no figures. To appear in Phys. Rev. Letts. July 21, 1997

Scientific paper

10.1103/PhysRevLett.79.1385

Using Abelian Bosonization, we develop a simple and powerful method to calculate the correlation functions of the two channel Kondo model and its variants. The method can also be used to identify all the possible boundary fixed points and their maximum symmetry, to calculate straightforwardly the finite size spectra, to demonstrate the physical picture at the boundary explicitly. Comparisons with Non-Abelian Bosonization method are made. Some fixed points corresponding to 4 pieces of bulk fermions coupled to s=1/2 impurity are listed.

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