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Advanced integrability techniques and analysis for quantum spin chains

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Academic year: 2021

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Figure

Figure 2.1: Illustration of the vertex model interpretation of the R-matrix and of the partition function.
Figure 2.3: Left: the two elementary portions of loops and their indices, with the notation i 0 = D + 1 − i
Figure 3.1: Bethe roots in the complex plane for the lowest state of magnetization 1 (left) and 0 (right), for L = 26.
Figure 3.2: In reading direction: plots of Z L 1/2,1/2 , Z L 1/2+1,1/2+1 , Z L 1/2+2,1/2+2 , Z L 1,1 , Z L 1/2+1,1/2 , Z L 1/2+2,1/2 as a function of 1/ log L, together with their extrapolated curves f 6 , f 7 , f 6 , f 5 , f 8 ,
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