Thermodynamical Limit for Correlated Gaussian Random Energy Models

Thermodynamical Limit for Correlated Gaussian Random Energy Models
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相关高斯随机能量模型的热力学极限

DOI:
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发表时间:
2002
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通讯作者:
S. Graffi
S. Graffi
中科院分区:
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作者:
P. Contucci;M. Esposti;C. Giardinà;S. Graffi

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摘要: 设{E(N)} N为|中国|=2N个中心单位高斯随机变量,由元素cN(Σ,τ)的协方差矩阵CN定义:=Av(EΣ(N)Eτ(N))和相应的随机汉密尔顿。则存在猝灭极限,如果对于每个分解N=N1+N2,且所有对(π,τ)<$$> N× <$N:其中πk(π),k= 1,2是<$$> N到<$Nk的投影。该条件在Sherrington-Kirkpatrick、偶p自旋、Derrida REM和Derrida-Gardner GREM模型中得到了明确验证。
Abstract: Let {EΣ(N)}ΣΣN be a family of |ΣN|=2N centered unit Gaussian random variables defined by the covariance matrix CN of elements cN(Σ,τ):=Av(EΣ(N)Eτ(N)) and the corresponding random Hamiltonian. Then the quenched thermodynamical limit exists if, for every decomposition N=N1+N2, and all pairs (Σ,τ)ΣN×ΣN: where πk(Σ),k=1,2 are the projections of ΣΣN into ΣNk. The condition is explicitly verified for the Sherrington-Kirkpatrick, the even p-spin, the Derrida REM and the Derrida-Gardner GREM models.