First-order transitions for n-vector models in two and more dimensions; rigorous proof
van Enter, A. C. D. · Shlosman, S. B.
Original · EN
We prove that various SO(n)-invariant n-vector models with interactions which have a deep and narrow enough minimum have a first-order transition in the temperature. The result holds in dimension two or more, and is independent on the nature of the low-temperature phase.
English translation
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