1993/08/03 by Alberto Parola, A. Parola, Sandro Sorella +3
Arts and Humanities · Physics and Astronomy · Social Sciences · #Advanced Condensed Matter Physics #Anisotropy #Antiferromagnetism #Computer science #Condensed matter physics #Eigenvalues and eigenvectors #Ferromagnetism #Field (mathematics) #Gapless playback #Ground state #Heisenberg model #Lanczos resampling #Media, Journalism, and Communication History #Phase transition #Physics #Physics of Superconductivity and Magnetism #Quantum #Quantum mechanics #Quantum phase transition #Radio, Podcasts, and Digital Media #Realization (probability) #Spin (aerodynamics) #Spin wave #Theoretical and Computational Physics #cond-mat
paper · pdf · doi:10.1103/physrevlett.71.4393
published in Physical Review Letters 71(26), 4393-4396 (American Physical Society) · 10 pages + 5 pictures appended, RevTex 3.0, SISSA 128/93/CM/MB
arxiv created 1993/08/03 · openalex publication_date 2013/06/07 · openalex created_date 2016/06/24 · arxiv updated 2016/08/30 · openalex updated_date 2026/04/28
The ground state properties of the two dimensional spatially anisotropic Heisenberg model are investigated by use of field theory mappings, spin-wave expansion, and Lanczos technique. Evidence for a disorder transition induced by anisotropy at about Jy/Jx0.1 is shown. We argue that the disordered phase is gapless and its long wavelength properties can be interpreted in terms of decoupled one dimensional chains.