接口
Interfaces
摘要：
讨论了相共存理论和平衡形式的几个方面。第一节从热力学的角度研究了这一问题。第二节介绍了统计力学理论。我们认为，特别是在低温下的微观界面的描述和存在的每单位面积的自由能（表面张力）。在第三节中，给出了一个二维界面简化模型中Wulff构造的微观有效性的证明。最后，在第四节中，研究了平衡晶体中的粗化转变和小平面的形成。附录A和B分别涉及上述第2节的第一和第二点。
英文摘要：
Several aspects of the theory of the coexistence of phases and equilibrium forms are discussed. In section 1, the problem is studied from the point of view of thermodynamics. In section 2, the statistical mechanical theory is introduced. We consider, in particular, the description of the microscopic interface at low temperatures and the existence of a free energy per unit area (surface tension). In section 3, a proof is given of the microscopic validity of the Wulff construction in a simplified model of a two-dimensional interface. Finally, in section 4, the roughening transition and the formation of facets in an equilibrium crystal are studied. Appendices A and B concern, respectively, the first and second points of section 2, mentioned above.
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