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Название: Non-Gibbsian Limit for Large-Block Majority-Spin Transformations
Авторы: Dorlas T.C., van Enter A.C.D.
Journal of Statistical Physics, Vol. 55, Nos. 1/2, 1989. p. 171-181.
We generalize a result of Lebowitz and Maes, that projections of massless Gaussian measures onto Ising spin configurations are non-Gibbs measures. This result provides the first evidence for the existence of singularities in majority-spin transformations of critical models. Indeed, under the assumption of the folk
theorem that an average-block-spin transformation applied to a critical Ising model in 5 or more dimensions converges to a Gaussian fixed point, we show that the limit of a sequence of majority-spin transformations with increasing block size applied to a critical Ising model is a measure that is not of Gibbsian type.