Leuzzi L, Parisi G, Ricci-Tersenghi F, Ruiz-Lorenzo J J
Dipartimento di Fisica, Università Sapienza di Roma, P.le Aldo Moro 2, I-00185 Roma, Italy.
Phys Rev Lett. 2008 Sep 5;101(10):107203. doi: 10.1103/PhysRevLett.101.107203. Epub 2008 Sep 3.
We introduce a diluted version of the one-dimensional spin-glass model with interactions decaying in probability as an inverse power of the distance. In this model, varying the power corresponds to changing the dimension in short-range models. The spin-glass phase is studied in and out of the range of validity of the mean-field approximation in order to discriminate between different theories. Since each variable interacts only with a finite number of others the cost for simulating, the model is drastically reduced with respect to the fully connected version, and larger sizes can be studied. We find both static and dynamic indications in favor of the so-called replica symmetry breaking theory.
我们引入了一维自旋玻璃模型的一个稀释版本,其中相互作用以概率形式随距离的倒数幂衰减。在这个模型中,改变幂次相当于在短程模型中改变维度。为了区分不同的理论,我们在平均场近似的有效范围内外研究了自旋玻璃相。由于每个变量仅与有限数量的其他变量相互作用,因此与完全连接版本相比,模拟该模型的成本大幅降低,并且可以研究更大的规模。我们发现了支持所谓的复制对称破缺理论的静态和动态迹象。