05-231 A.C.D.van Enter and S.B.Shlosman

First-order transitions for very nonlinear sigma models (44K, latex) Jun 29, 05

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Abstract. In this contribution we discuss the occurrence of first-order transitions in temperature in various short-range lattice models with a rotation symmetry. Such transitions turn out to be widespread under the condition that the interaction potentials are sufficiently nonlinear.

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