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VOLUME 59 (1994) | ISSUE 1 | PAGE 71
Exact solution of the Blume-Emery-Griffiths model on a Bethe lattice
The Blume-Emery-Griffiths model is analyzed in the subspace of exchange-interaction constants K= — In cos hJ. Exact expressions are derived for the free energy, for the Λ-line of second-order phase transitions, for the tricritical point, and for the critical exponents.