Infinite-range Ising spin glass in a transverse field
Infinite-range Ising spin glass in a transverse field
复制标题
横向场无限程伊辛自旋玻璃
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
T. R. Kirkpatrick
中科院分区：
文献类型：
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作者：
D. Thirumalai;Qiang Li;T. R. Kirkpatrick
本文研究了横场作用下的无限程伊辛自旋玻璃。使用广义Trotter公式和副本方法，猝灭的随机键相互作用的系统的自由能使用静态近似进行评估。结果表明，当横场强度等于无规键相互作用矩阵的最大本征值时，自旋玻璃化转变被破坏。作者还表明，复制对称的自旋玻璃相是稳定的温度场相图的某个区域。最后，他们提出的建议参数表明，当时间依赖的动态磁化率被包括在内，然后复制对称相的稳定性增强。
The infinite-range Ising spin glass in the presence of a transverse field is considered. Using the generalised Trotter formula and replica methods, the free energy for the system with quenched random bond interactions is evaluated using the static approximation. It is shown that, when the strength of the transverse field equals the largest eigenvalue of the random bond interaction matrix, the spin glass transition is destroyed. The authors also show that a replica-symmetric spin glass phase is stable in a certain region of the temperature-field phase diagram. Finally they present suggestive arguments which indicate that, when the time dependence of the dynamic susceptibility is included, then the stability of the replica-symmetric phase is enhanced.