Gel'fand Levitan Method for Quantum Spin Systems
Open Access
- 1 August 1982
- journal article
- Published by Oxford University Press (OUP) in Progress of Theoretical Physics
- Vol. 68 (2) , 527-540
- https://doi.org/10.1143/PTP.68.527
Abstract
The quantum Gel'fand Levitan method is formulated for the Ising-like Heisenberg Ising spin chain. The solution of the Gel'fand Levitan equation makes it possible to express the spin operators in terms of the creation and the annihilation operators of Bethe's eigenstates. The spin operators are expressed by the normal product expansion and the lowest order term is explicitly calculated.Keywords
This publication has 1 reference indexed in Scilit:
- Zur Theorie der MetalleThe European Physical Journal A, 1931