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Spin glasses on the hypercube

机译:在超立方体上旋转眼镜

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We present a mean field model for spin glasses with a natural notion of distance built in, namely, the Edwards-Anderson model on the diluted D-dimensional unit hypercube in the limit of large D. We show that finite D effects are strongly dependent on the connectivity, being much smaller for a fixed coordination number. We solve the nontrivial problem of generating these lattices. Afterward, we numerically study the nonequilibrium dynamics of the mean field spin glass. Our three main findings are the following: (ⅰ) the dynamics is ruled by an infinite number of time sectors, (ⅱ) the aging dynamics consists of the growth of coherent domains with a nonvanishing surface-volume ratio, and (ⅲ) the propagator in Fourier space follows the p~4 law. We study as well the finite D effects in the nonequilibrium dynamics, finding that a na?ve finite size scaling ansatz works surprisingly well.
机译:我们提出了具有自然距离概念的旋转玻璃的平均场模型,即在大D极限内的稀释D维单位超立方体上的Edwards-Anderson模型。我们证明了有限D效应强烈依赖于连接性,对于固定的协调号码要小得多。我们解决了生成这些晶格的非平凡问题。之后,我们通过数值研究了平均场旋转玻璃的非平衡动力学。我们的三个主要发现是:(ⅰ)动力学是由无数个时间段控制的;(ⅱ)老化动力学是由相干域的生长和表面体积比不消失组成的;(ⅲ)传播子在傅立叶空间中遵循p〜4定律。我们还研究了非平衡动力学中的有限D效应,发现幼稚的有限尺寸缩放ansatz效果惊人。

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