Kiyomi Okamoto
Published 2002-01-02Version 1
We investigate the inversion phenomenon between the XXZ anisotropies of the Hamiltonian and the wave function in quantum spin chains, mainly focusing on the S=1/2 trimerized XXZ model with the next-nearest-neighbor interactions. We have obtained the ground-state phase diagram by use of the degenerate perturbation theory and the level spectroscopy analysis of the numerical data calculated by the Lanczos method. In some parameter regions, the spin-fluid is realized for the Ising-like anisotropy, and the Neel state for the XY-like anisotropy, against the ordinary situation.
Comments: 4 pages, 4 figures (embedded): Conference paper: Yukawa-Institute-for-Theoretical-Physics International Workshop "Order, Disorder, and Dynamics in Quantum Spin Systems" (Nov.15-16,2001): will be published as a special issue of Supplement Prog. Theor. Phys
Macroscopic effects of localised measurements in jammed states of quantum spin chains
Superdiffusion from emergent classical solitons in quantum spin chains
Formation probabilities and statistics of observables as defect problems in the free fermions and the quantum spin chains
