Monte Carlo Method for Quantum Spin Systems Based on the Bloch Coherent State Representation
- 1 February 1985
- journal article
- Published by Oxford University Press (OUP) in Progress of Theoretical Physics
- Vol. 73 (2) , 332-343
- https://doi.org/10.1143/ptp.73.332
Abstract
On the basis of the path integral representation of the partition function of a quantum spin system, which is derived by Lieb with use of the Bloch coherent state representation, we propose a new Monte Carlo method for quantum spin systems. In this method, the magnitude S of the spin can be varied freely, because S appears in the path integral only as a parameter. The approximation used in this method can be systematically improved by the 1/n-expansion, where n is the additional dimension in the path integral representation. The formulation and some properties of the method are discussed. Simple examples of the application of the method are also presented.Keywords
This publication has 1 reference indexed in Scilit:
- Generalized phase space method in spin systems-spin coherent state representationJournal of Statistical Physics, 1976