activity
19962010
most citedBethe's equation is incomplete for the XXZ model at roots of unity

92 citations · 528 across the 23 of their papers we have counts for

collaborators

23 papers

cond-mat.stat-mech2010

Properties of the String Operator in the Eight-Vertex Model

Klaus Fabricius

The construction of creation operators of exact strings in eigenvectors of the eight vertex model at elliptic roots of unity of the crossing parameter which allow the generation of…

cond-mat.stat-mech2010★ 2 cited

Correlation functions for the three state superintegrable chiral Potts spin chain of finite lengths

Klaus Fabricius, Barry M. McCoy

We compute the correlation functions of the three state superintegrable chiral Potts spin chain for chains of length 3,4,5. From these results we present conjectures for the form o…

cond-mat.stat-mech2008★ 12 cited

New Q matrices and their functional equations for the eight vertex model at elliptic roots of unity

Klaus Fabricius, Barry M. McCoy

The Q matrix invented by Baxter in 1972 to solve the eight vertex model at roots of unity exists for all values of N, the number of sites in the chain, but only for a subset of roo…

cond-mat.stat-mech2007★ 12 cited

The TQ equation of the 8 vertex model for complex elliptic roots of unity

Klaus Fabricius, Barry M. McCoy

We extend our studies of the TQ equation introduced by Baxter in his 1972 solution of the 8 vertex model with parameter given by from to the more gen…

cond-mat.stat-mech2006

The Eight Vertex Model.New results

Klaus Fabricius, Barry M. McCoy

Whereas the tools to determine the eigenvalues of the eight-vertex transfer matrix T are well known there has been until recently incomplete knowledge about the eigenvectors of T.…

cond-mat.stat-mech2006★ 26 cited

A new Q-matrix in the Eight-Vertex Model

Klaus Fabricius

We construct a -matrix for the eight-vertex model at roots of unity for crossing parameter with odd , a case for which the existing constructions do not work. The n…