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Criticality of the discrete N-vector ferromagnet in a cubic lattice with a free surface

✍ Scribed by Anna Chame; Constantino Tsallis

Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 901 KB
Volume: 165
Category: Article
ISSN: 0378-4371
DOI: 10.1016/0378-4371(90)90241-j

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✦ Synopsis

in a semi-infinite cubic lattice. The coupling constants at the surface, K s and Ls, are allowed to be different from the bulk ones, K a and L B. Using a simple real-space renormalization group procedure we obtain the N-evolution (N real) of the phase diagram, including the N---~0 and N---~¢¢ limits. The thermal (u) and crossover (~b) critical exponents at various critical and multicritical points are calculated.

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