Phase diagrams of Ising models on Husimi trees. I. Pure multisite interaction systems |
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Authors: | James L. Monroe |
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Affiliation: | (1) Department of Physics, Pennsylvania State University, 15061 Monaca, Pennsylvania |
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Abstract: | Lattice spin systems with multisite interactions have rich and interesting phase diagrams. We present some results for such systems involving Ising spins (=±1) using a generalization of the Bethe lattice approximation. First, we show that our approach yields good approximations for the phase diagrams of some recently studied multisite interaction systems. Second, a multisite interaction system with competing interactions is investigated and a strong connection with results from the theory of dynamical systems is made. We exhibit a full bifurcation diagram, chaos, period-3 windows, etc., for the magnetization of the base site of this system. |
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Keywords: | Ising models Husimi tree dynamical systems bifurcation chaos |
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