1997/02/10 by Holger Frahm, Claus Rödenbeck · 2 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #Quantum many-body systems #cond-mat.stat-mech
paper · pdf · doi:10.1088/0305-4470/30/13/005
published as J. Phys. A 30 (1997) 4467-4479 · 19 pages, 9eps figures, Latex
arxiv created 1997/02/10 · openalex publication_date 1997/07/07 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
We study zero temperature properties of a system of two coupled quantum spin chains subject to fields explicitly breaking time reversal symmetry and parity. A suitable choice of the strength of these fields gives a model soluble by Bethe ansatz methods which allows us to determine the complete magnetic phase diagram of the system and the asymptotics of correlation functions from the finite size spectrum. The chiral properties of the system for both the integrable and the nonintegrable case are studied using numerical techniques.