Published February 18, 2008
| Version v1
Journal article
Canonical sequence method applied to a two-dimensional spin system
- 1. Physics Department, Fordham University, Bronx, NY 10458 (United States)
- 2. Department of Physical Sciences, Kingsborough College of the City University of New York, 2001 Oriental Boulevard, Brooklyn, NY 11235 (United States)
- 3. Department of Chemistry and Physics, Chicago State University, Chicago, IL 60628 (United States)
Description
A number of years ago, Horn and Weinstein introduced a novel nonperturbative method, the t-expansion, for calculating ground-state expectation values for Hamiltonian systems. Recently Samaj et al. have generalized the t-expansion technique and the related connected moments expansion to a more general canonical sequence. In the present work we have expounded upon this work and have applied this to the two-dimensional square anisotropic XXZ Heisenberg model
Availability note (English)
Available from http://dx.doi.org/10.1016/j.physleta.2007.09.034Additional details
Identifiers
- DOI
- 10.1016/j.physleta.2007.09.034;
- PII
- S0375-9601(07)01355-2;
Publishing Information
- Journal Title
- Physics Letters. A
- Journal Volume
- 372
- Journal Issue
- 8
- Journal Page Range
- p. 1155-1160
- ISSN
- 0375-9601
- CODEN
- PYLAAG
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39094763
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Descriptors DEI
- ANISOTROPY; CALCULATION METHODS; EXPANSION; GROUND STATES; HAMILTONIANS; HEISENBERG MODEL; SPIN; TWO-DIMENSIONAL CALCULATIONS
- Descriptors DEC
- ANGULAR MOMENTUM; CRYSTAL MODELS; ENERGY LEVELS; MATHEMATICAL MODELS; MATHEMATICAL OPERATORS; PARTICLE PROPERTIES; QUANTUM OPERATORS
Optional Information
- Copyright
- Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.