A multicritical point of $S=1$ XXZ chain with single ion anisotropy

Abstract

We research the ground state of the $S=1$ XXZ spin chain with single ion anisotropy, focusing on XY1, XY2 (Spin Nematic), Neel, Haldane phases. Recently, it was reported that the four phases did not intersect at a single point using conventional numerical methods, which is inconsistent with the bosonization theory. In order to resolve this discrepancy, we propose a unified method to determine phase boundaries by combining conformal field theory (CFT) with numerical diagonalization. And we discuss the symmetry and universality class of the multicritical point.

arXiv comment10 pages, 10 figures

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Cited by in corpus (1)

• Correlation functions at the topological quantum phase transition in the S=1 XXZ chain with single-ion anisotropy