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arXiv 0706.3596cond-mat.stat-mech
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非平衡表面粗糙化中的时间相关耦合和交叉长度尺度

Time dependent couplings and crossover length scales in non-equilibrium surface roughening

Marc Pradas, Juan M. López, A. Hernández-Machado

摘要:

我们表明,依赖于时间的耦合可能会导致非平凡的非平衡动力学粗糙化模型中的渐近制度的表面起伏的标度特性。研究了三种典型情况。在两个不同的粗糙制度之间的交叉的情况下,时间相关的耦合可能会导致在交叉长度以上的尺度的异常缩放。在不同的设置中,对于从粗糙状态到平坦状态或阻尼状态的交叉,时间相关的交叉长度可能共同产生粗糙表面,尽管最相关的项倾向于使表面变平。此外,我们的分析揭示了现有的辩论中的问题,自发吸胀,随时间变化的耦合自然出现在理论模型和实验。

英文摘要:

We show that time dependent couplings may lead to nontrivial scaling properties of the surface fluctuations of the asymptotic regime in non-equilibrium kinetic roughening models . Three typical situations are studied. In the case of a crossover between two different rough regimes, the time-dependent coupling may result in anomalous scaling for scales above the crossover length. In a different setting, for a crossover from a rough to either a flat or damping regime, the time dependent crossover length may conspire to produce a rough surface, despite the most relevant term tends to flatten the surface. In addition, our analysis sheds light into an existing debate in the problem of spontaneous imbibition, where time dependent couplings naturally arise in theoretical models and experiments.

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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