Heriot-Watt Mathematics Report Series
HWM00-6, 30 Mar 2000
Impurity Operators in RSOS Models
R A Weston
Abstract
We give a construction of impurity operators in the `algebraic
analysis' picture of RSOS models. Physically, these operators
are half-infinite insertions of certain fusion-RSOS Boltzmann weights.
They are the face analogue of insertions of higher spin lines in vertex
models. Mathematically, they are given in terms of intertwiners of
$U(\widehat{sl}_2)_q$ modules. We present a detailed perturbation
theory check of the correspondence between the physical and mathematical
constructions.
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Full text: http://www.ma.hw.ac.uk/~robertw/papers/rsosimp.ps
Publication
R A Weston
, Impurity operators in RSOS models, J Phys A: Math. Gen, 33, 8981-9001, (2000).
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