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Phenomenological renormalization for spin glasses

Morgenstern, Ingo ; Huse, David A.
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Date of publication of this fulltext: 23 Aug 2010 11:59


Abstract

The phenomenological renormalization approach of Nightingale was carried out for 2-dim spin glasses. We examine models with Gaussian, exp (-J2/2), and exponential, exp (-|J|), distributions for nearest neigbor Ising spins. The correlation length exponent is estimated to be v = 4.2±0.5 in contrast to the scaling laws of the “freezing theory” which require v = 2.


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