On Ground State Degeneracy of Symmetric Quantum Spin Models
Taku Matsui
Tokyo Metropolitan University, Japan
![On Ground State Degeneracy of $Z_2$ Symmetric Quantum Spin Models cover](/_next/image?url=https%3A%2F%2Fcontent.ems.press%2Fassets%2Fpublic%2Fimages%2Fserial-issues%2Fcover-prims-volume-27-issue-4.png&w=3840&q=90)
Abstract
We consider a class of symmetric quantum spin Hamiltonians. Anisotropic spin Heisenberg models are typical examples.
Proof of groound state degeneracy ( symmetry breaking), construction of pure gournd states are given in a systematic way.
Cite this article
Taku Matsui, On Ground State Degeneracy of Symmetric Quantum Spin Models. Publ. Res. Inst. Math. Sci. 27 (1991), no. 4, pp. 657–679
DOI 10.2977/PRIMS/1195169424