Nonequilibrium dynamic transition in a kinetic Ising model driven by both deterministic modulation a

来源 :科学通报(英文版) | 被引量 : 0次 | 上传用户:roc59516663
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
We report the nonequilibrium dynamical phase transition (NDPT) appearing in a kinetic Ising spin system (ISS) subject to the joint application of a deterministic external field and the stochastic mutually correlated noises simultaneously. A time-dependent Ginzburg-Landau stochastic differential equation, including an oscillating modulation and the correlated multiplicative and additive white noises, was addressed and the numerical solution to the relevant Fokker-Planck equation was presented on the basis of an average-period approach of driven field. The correlated white noises and the deterministic modulation induce a kind of dynamic symmetry-breaking order, analogous to the stochastic resonance in trend, in the kinetic ISS, and the reentrant transition has been observed between the dynamic disorder and order phases when the intensities of multiplicative and additive noises were changing. The dependencies of a dynamic order parameter Q upon the intensities of additive noise A and multiplicative noise M, the correlation λ between two noises, and the amplitude of applied external field h were investigated quantitatively and visualized vividly. Here a brief discussion is given to outline the underlying mechanism of the NDPT in a kinetic ISS driven by an external force and correlated noises.
其他文献
核子中奇异-反奇异夸克分布的不对称性是核子结构研究中的重要非微扰效应,然而至今未被实验所直接检验.为了探讨测量这种奇异分布不对称性的有效方法,考察了轻味夸克碎裂效应
为了高效准确地确定整体X光透镜焦斑位置,设计了一种新方法:轴向扫描法.该方法避免了探测系统的死时间问题,可以在大能量范围内同时测量透镜在不同能量点的出口焦距,在确定透
在北京正负电子对撞机直线加速器实验束上进行了BESⅢ飞行时间计数器1:1模型的束流测试.利用动量为800MeV/c的电子束,对应用不同包装材料(铝膜和Tyvek)的不同闪烁体(BC408和E
DSSC has been a subject of intense study throughout the world. The efforts to investigate DSSC are mainly focused on how to increase light absorption, speed ele
采用Dirac Brueckner-Hartree-Fock方法研究同位旋相关的相对论微观光学势,讨论了其同位旋相关项的处理.采用定域密度近似得到有限核的微观光学势,以208Pb为例讨论了光学势的
In this paper, we study the algebra consisting of analytic functions in the Sobolev space W2,2(D) (D is the unit disk), called the Sobolev disk algebra, explore
X-ray magnetic circular dichroism in absorption of the single-crystal iron layer deposited epitaxially on MgO substrate is studied. Spin and orbital moment, 0.0
采用同步辐射微探针技术研究了正常大鼠脑中的微量元素的分布,并给出了二维空间分布图.结果显示:Cl,Ca,Zn主要集中分布在海马区,K主要分布在海马和皮层,而Cu的分布则相对无规
The physical phenomena and corresponding theoretical analysis of orthogonal polarized laser are reviewed. Four lasers (or systems) with orthogonal polarized bea
The inhomogeneous non-equilibrium molecular dynamics (NEMD) scheme is applied to model phonon heat conduction in thin nickel films. The electronic contribution