Xu X B, Tang T, Wang Z H, Xu X N, Fang G Y, Gu M
Collaborative Innovation Center of Advanced Microstructures, School of Physics, Nanjing University, Nanjing 210093, People's Republic of China.
Phys Rev E. 2021 Jan;103(1-1):012604. doi: 10.1103/PhysRevE.103.012604.
We numerically investigate the nonequilibrium behaviors of classic particles with competing interactions confined in a two-dimensional logarithmic trap. We reveal a quench-induced surprising dynamics exhibiting rich dynamic patterns depending upon confinement strength and trap size, which is attributed to the time-dependent competition between interparticle repulsions and attractions under a circular confinement. Moreover, in the collectively diffusive motions of the particles, we find that the emergence of dynamic structure transformation coincides with a diffusive mode transition from superdiffusion to subdiffusion. These findings are likely useful in understanding the pattern selection and evolution in various chemical and biological systems in addition to modulated systems, and add a new route to tailoring the morphology of pattern-forming systems.
我们对限制在二维对数势阱中具有竞争相互作用的经典粒子的非平衡行为进行了数值研究。我们揭示了一种猝灭诱导的惊人动力学，其表现出丰富的动力学模式，这取决于限制强度和势阱大小，这归因于在圆形限制下粒子间排斥和吸引之间随时间变化的竞争。此外，在粒子的集体扩散运动中，我们发现动态结构转变的出现与从超扩散到亚扩散的扩散模式转变相吻合。这些发现除了对调制系统外，可能有助于理解各种化学和生物系统中的模式选择和演化，并为定制模式形成系统的形态增加了一条新途径。
