Renormalisation group recursions by mean-field approximations
- 1 June 1982
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 15 (6) , L291-L297
- https://doi.org/10.1088/0305-4470/15/6/008
Abstract
Within a renormalisation group strategy, different 'rescaled' mean-field approximations for the magnetisation are combined. Good qualitative estimates are obtained for the critical properties of classical and quantum spin systems. A particularly simple realisation of the method yields recursions for arbitrary dimensionality d. The critical couplings are accurate for all d, and have the correct asymptotic behaviour for d approaching infinity.Keywords
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