包含在场论形式中的具有介观长度尺度涨落的软物质的密度泛函理论
Density functional theory for soft matter with mesoscopic length scale fluctuations included within field-theoretic formalism
摘要：
结合密度泛函和统计场论的软物质系统的介观理论是从微观理论通过系统的粗粒化过程。在该理论的框架内，我们获得了普遍的相序列：无序、体心立方、六方、片状、倒置六方、倒置体心立方、无序，以增加远低于密堆积密度的密度。除了上述相之外，根据相互作用势，可能会出现更复杂的相。对于一个特定的形式的短程吸引长程排斥的潜力，我们发现的bcontinuous gyroid相（Ia3d对称性），这可能与网络形成的胶体和非吸附聚合物的混合物中的胶体簇。
英文摘要：
Mesoscopic theory for soft-matter systems that combines density functional and statistical field theory is derived from the microscopic theory by a systematic coarse-graining procedure. Within the framework of this theory we obtain the universal sequence of phases: disordered, bcc, hexagonal, lamellar, inverted hexagonal, inverted bcc, disordered, for increasing density well below the close-packing density. In addition to the above phases, more complex phases may appear depending on the interaction potentials. For a particular form of the short-range attraction long-range repulsion potential we find the bicontinuous gyroid phase (Ia3d symmetry) that may be related to a network forming cluster of colloids in a mixture of colloids and nonadsorbing polymers.
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