First-order phase transition of fixed connectivity surfaces

Details First-order phase transition of fixed connectivity surfaces First-order phase transition of fixed connectivity surfaces

2004-11-09

arxiv.org/abs/cond-mat/0411209v1

Phys. Rev. E 69, 066139 (2004)

Physics

Condensed Matter

Statistical Mechanics

6 pages with 7 figures

Scientific paper

10.1103/PhysRevE.69.066139

We report a numerical evidence of the discontinuous transition of a tethered membrane model which is defined within a framework of the membrane elasticity of Helfrich. Two kinds of phantom tethered membrane models are studied via the canonical Monte Carlo simulation on triangulated fixed connectivity surfaces of spherical topology. A surface model is defined by the Gaussian term and the bending energy term, and the other, which is tensionless, is defined by the bending energy term and a hard wall potential. The bending energy is defined by using the normal vector at each vertex. Both of the models undergo the first-order phase transition characterized by a gap of the bending energy. The phase structure of the models depends on the choice of discrete bending energy.

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