Proof of rounding by quenched disorder of first order transitions in low- dimensional quantum systems
نویسندگان
چکیده
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منابع مشابه
Rounding of first order transitions in low-dimensional quantum systems with quenched disorder.
We prove that the addition of an arbitrarily small random perturbation to a quantum spin system rounds a first-order phase transition in the conjugate order parameter in d < or = 2 dimensions, or for cases involving the breaking of a continuous symmetry in d < or = 4. This establishes rigorously for quantum systems the existence of the Imry-Ma phenomenon which for classical systems was proven b...
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