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arXiv 1107.0699cond-mat.soft
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非单调相互作用系统的斑图形成和相变

Pattern formation and phase transitions in systems with non-monotonic interaction

H. J. Zhao, V. R. Misko, F. M. Peeters

摘要:

利用分子动力学模拟,我们分析了通过非单调短程排斥势(r<r_c)和长程吸引势(r>r_c)相互作用质点系中的斑图形成,并确定了不同的相.根据不同的参数,相互作用势模拟了各种物理系统中的粒子间相互作用,从原子、分子和胶体到中子星和低kappa II型超导体和最近发现的“1.5型”超导体中的涡旋。我们构造了“临界半径r_c -密度n”相图,并提出了一种新的表征相的方法。也就是说,我们制定了一套定量标准,以确定不同的阶段,使用径向分布函数(RDF),局部密度函数,和占用因子。

英文摘要:

We analyzed pattern formation and identified different phases in a system of particles interacting through a non-monotonic short-range repulsive (r<r_c) and long-range attractive (r>r_c) potential, using molecular-dynamics simulations. Depending on parameters, the interaction potential models the interparticle interaction in various physical systems ranging from atoms, molecules and colloids to neutron stars and vortices in low-kappa type-II superconductors and in recently discovered "type-1.5" superconductors. We constructed the phase diagram "critical radius r_c - density n" and proposed a new approach to characterization of the phases. Namely, we elaborated a set of quantitative criteria in order to identify the different phases using the Radial Distribution Function (RDF), the local density function, and the occupation factor.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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