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TT: Fachverband Tiefe Temperaturen

TT 41: CE: Low-dimensional Systems - Models 2

TT 41.8: Vortrag

Freitag, 26. März 2010, 12:15–12:30, H21

Spectra of integrable Chalker-Coddington network models — •Michael Brockmann and Win Nuding — Bergische Universität Wuppertal, Germany

We study an integrable Chalker-Coddington model with sl(2,1) supersymmetry. These systems can be represented as vertex models with staggering in both lattice directions. The objects of interest are the eigenvalues of the transfer matrices. For these objects a Bethe ansatz treatment was presented by Essler, Frahm and Saleur (2005).

So far the Bethe ansatz equations could only be solved numerically for large but finite lattices. Here we present an analytic treatment for arbitrary lattice sizes.