Bifurcation at the c=3/2 Takhtajan-Babujian point to the c=1 critical lines

Details Bifurcation at the c=3/2 Takhtajan-Babujian point to the c=1 critical lines Bifurcation at the c=3/2 Takhtajan-Babujian point to the c=1 critical lines

1998-11-25

arxiv.org/abs/cond-mat/9811353v2

Physics

Condensed Matter

Statistical Mechanics

10 pages, 8 figures

Scientific paper

10.1103/PhysRevB.59.11358

We study the S=1 quantum spin chains with bilinear, biquadratic, plus bond alternation in the vicinity of the S=1 Takhtajan-Babujian model. Transition line between the Haldane and the dimer phases are determined numerically. To see the crossover behavior from c=3/2 (k=2 SU(2) WZW model) at the Takhtajan-Babujian point to c=1 (k=1 SU(2) WZW model), we calculate the conformal anomaly c and scaling dimensions of the primary fields on the transition line.

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