液体界面の形状変動相転移とその液体性に関する数値的研究(<小特集>異相界面における諸現象の物理)

抄録

We discuss the phase transition of shape fluctuations in two models of fluid membranes. The energy functions of the models are assumed to be the linear combination of an area energy and a bending energy. As a result, the models have the membrane elasticity seen in such a lipid bilayer membrane (BLM) in the aqueous solution and in an adsorbed monolayer on the water. The models are also assumed to have the fluidity corresponding to the lateral diffusion well-known experimentally as a molecular motion in such a BLM. The energy functions are discretized on random triangulated networks. The fluidity is realized by the dynamical triangulation in MC, and is visualized by CG. The phase transition of shape fluctuations as well as the main transitons are investigated on the basis of the motions of the molecules in R³.