J.A. Barker, D. Henderson, et al.
Molecular Physics
Paper
Random-field Ising model on a Bethe lattice
Abstract
The ground state of the random-field Ising ferromagnet on a Bethe lattice is found. With decreasing random-field strength an infinite series of spin-flip transitions precedes the onset of ferromagnetism. The T=0 critical behavior is not mean-field-like. At finite temperatures a series of Griffiths singularities precedes the phase transition. As T0, the Griffiths singularities terminate at the spin-flip transitions. The T 0 critical behavior is argued to be mean-field-like. © 1984 The American Physical Society.
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