Published May 17, 2004
| Version v1
Journal article
A matrix Kato-Bloch perturbation method for Hamiltonian systems
Creators
Description
A generalized version of the Kato-Bloch perturbation expansion is presented. It consists of replacing simple numbers appearing in the perturbative series by matrices. It is shown that the matrix expansion converges for a suitably chosen subspace and, for weakly coupled Heisenberg chains, it can lead to an ordered state starting from a disordered single chain
Additional details
Identifiers
- DOI
- 10.1016/j.physleta.2004.03.066;
- arXiv
- arXiv:physics/0312011v1;
- PII
- S0375960104003925;
Publishing Information
- Journal Title
- Physics Letters. A
- Journal Volume
- 325
- Journal Issue
- 3-4
- Journal Page Range
- p. 177-181
- ISSN
- 0375-9601
- CODEN
- PYLAAG
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36092242
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- HAMILTONIANS; HEISENBERG MODEL; MATRICES; PERTURBATION THEORY; SERIES EXPANSION
- Descriptors DEC
- CRYSTAL MODELS; MATHEMATICAL MODELS; MATHEMATICAL OPERATORS; QUANTUM OPERATORS
Optional Information
- Copyright
- Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.