2001/06/14 by Shigeru Koikegami, Koikegami, Shigeru, Synge Todo +3
Physics and Astronomy · #Disordered Systems and Neural Networks (cond-mat.dis-nn) #FOS: Physical sciences #Physics of Superconductivity and Magnetism #Quantum many-body systems #Statistical Mechanics (cond-mat.stat-mech) #Theoretical and Computational Physics #cond-mat.dis-nn #cond-mat.stat-mech
paper · pdf · doi:10.48550/arxiv.cond-mat/0106289
9 pages including 4 figures
openalex publication_date 2001/06/14 · arxiv created 2001/06/21 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We investigate S=1 antiferromagnetic quantum spin chain, whose exchange\ncouplings are strongly disordered. By the real-space renomalization group\nmethod, introduced by Ma, Dasgupta, and Hu, the renormalization group flows are\nanalyzed numerically in a plain of the anisotoropy of the exchange coupling vs.\nthe staggered magnetic field. As the result, the Heisenberg point, which has a\nzero average of the exchange coupling anisotropy, is specified as the unstable\nfixed point against the anisotropy.\n