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利用伊辛模型相变点附近的反常扩散研究方法，探索相互作用势为V(ξ)=-ξ2/2+ξ4/4的一维双势阱晶格在热传导转变行为的两个无量钢温度特征转变点T=0.05和T=0.1附近序参量的输运行为。研究发现，与其他典型温度只出现弹道输运和正常输运不同的是，T=0.05会呈现额外的亚扩散输运，T=0.1则有一个超扩散输运区域。进一步分析表明，这些序参量的反常输运与系统中热输运和动量输运紧密相关。
Abstract：Using the method of anomalous diffusion near the critical point of the Ising model, we investigate the heat conduction transport behavior in a one-dimensional lattice with a double-well potential which interaction potential is V(ξ)=-ξ2/2+ξ4/4 during thermal conduction transition at two dimensionless temperature characteristic points T=0.05和T=0.1.It is found that, unlike other typical temperatures where only ballistic transport and normal transport occur, an additional subdiffusion transport appears at T=0.05;while there is a superdiffusion transport region at T=0.1.Further analysis shows that these anomalous transports of order parameters are closely related to thermal and momentum transports in the system.
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基本信息:
DOI：10.19724/j.cnki.jmju.2025.02.004
中图分类号:O411
引用信息:
[1]熊大兴,王忠瀚,钟蔚.一维双势阱晶格热传导转变点附近序参量的反常输运[J].闽江学院学报,2025,46(02):24-33.DOI:10.19724/j.cnki.jmju.2025.02.004.
基金信息:
国家自然科学基金项目(12275116); 福建省自然科学基金项目(2021J02051); 闽江学院引进人才科研启动项目(MJY21035)