Monte Carlo renormalization-group study of tricritical behavior in two dimensions
Physical Review B, ISSN: 0163-1829, Vol: 33, Issue: 11, Page: 7700-7707
1986
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Article Description
Using a Monte Carlo renormalization-group (MCRG) method we study tricritical behavior in two very different two-dimensional spin models: the Blume-Capel ferromagnet and the next-nearest-neighbor Ising antiferromagnet. The MCRG method is used to locate accurately tricritical points independent of the convergence of eigenvalue estimates. Despite the different symmetries and the different renormalization transformations used for the two models, in both cases we find four relevant tricritical eigenvalues which are essentially identical for both models. For the antiferromagnet, there is no indication of any decomposition of the tricritical point as predicted by mean-field theory, for ratios of intrasublattice to intersublattice coupling as small as (1/8). © 1986 The American Physical Society.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=33645088896&origin=inward; http://dx.doi.org/10.1103/physrevb.33.7700; http://www.ncbi.nlm.nih.gov/pubmed/9938135; https://link.aps.org/doi/10.1103/PhysRevB.33.7700; http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.33.7700/fulltext; http://link.aps.org/article/10.1103/PhysRevB.33.7700
American Physical Society (APS)
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