101 自己回避性のあるメッシュワークモデルの相転移(OS1-(1)オーガナイズドセッション《計算力学と数値シミュレーション》)

概要

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We study a surface model with a self-avoiding interaction by using the canonical Monte Carlo simulation technique on fixed-connectivity triangulated and spherical lattices. The model is a meshwork model, which is defined by a one-dimensional bending energy, the area energy, and the self-avoiding potential. The pressure term is also included in the Hamiltonian; the volume enclosed by the surface is well defined because of the self-avoidance. The meshwork model is known to have a rich variety of phases; the smooth spherical phase, the planar phase, the linear phase, and the collapsed phase, in the case without the self-avoiding interaction. The numerical results show that the planar phase appears only when the pressure is positive outside the surface in the self-avoiding model. Thus, we find that a role of self-avoiding interaction is to make the pressure positive inside the surface.
一般社団法人日本機械学会の論文
2011-08-26