An approach to critical phenomena from one subsystem based on the CAM analysis
- 7 July 1990
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 23 (13) , 3051-3060
- https://doi.org/10.1088/0305-4470/23/13/039
Abstract
Two systematic series of multi-body effective field approximations are constructed and the CAM analyses are performed for the Ising mode on the two-dimensional square lattice. In the first series a two-body effective field is introduced in addition to the usual one-body one and a set of strips are used. The critical temperature and the critical index of the susceptibility are estimated as T*c approximately=2.2697 J/kB and gamma approximately=1.749. In the second series only a three-line strip is used and applied with increasing numbers of multi-body effective fields. The expected CAM scaling behaviour has also been observed.Keywords
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