表面无序临界薄膜中的涨落诱导力
Fluctuation induced forces in critical films with disorder at their surfaces
摘要：
我们研究淬火表面无序的有效相互作用的两个平面表面浸没在流体的临界附近，属于伊辛体普适性类之间的影响。我们考虑的情况下，在无规表面场的情况下，表面的膜属于表面的普遍性类的所谓普通的过渡。我们分析发现，在线性弱耦合制度，即，在包括平均场贡献和高斯涨落时，具有零平均值的随机表面场的存在导致对两个限制表面之间的临界Casimir相互作用的吸引的、无序诱导的贡献。我们的分析，场论结果与相应的蒙特卡罗模拟数据进行了比较。
英文摘要：
We investigate the effect of quenched surface disorder on effective interactions between two planar surfaces immersed in fluids which are near criticality and belong to the Ising bulk universality class. We consider the case that, in the absence of random surface fields, the surfaces of the film belong to the surface universality class of the so-called ordinary transition. We find analytically that in the linear weak-coupling regime, i.e., upon including the mean-field contribution and Gaussian fluctuations, the presence of random surface fields with zero mean leads to an attractive, disorder-induced contribution to the critical Casimir interactions between the two confining surfaces. Our analytical, field-theoretic results are compared with corresponding Monte Carlo simulation data.
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