Fluctuations in the flat and collapsed phases of polymerized membranes
- 1 January 1990
- journal article
- Published by EDP Sciences in Journal de Physique
- Vol. 51 (23), 2653-2672
- https://doi.org/10.1051/jphys:0199000510230265300
Abstract
Fluctuations in polymerized membranes are explored via extensive molecular dynamics simulations of simplified « tethered surface » models. The entropic rigidity associated with repulsive second-nearest-neighbor interactions leads to a flattening of « phantom surfaces ». An attractive interaction in the presence of distant self-avoidance leads to a collapsed membrane with fractal dimension three at sufficiently low temperatures. When the attractive interaction is turned off, the surface returns to the flat phase found in earlier simulations. A study of density profiles and hexatic internal order allows a simple physical interpretation of results for the structure function of oriented membranesKeywords
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