title: Defect dynamics in crystalline buckled membranes.
abstract: We study the dynamics of defect annihilation in flexible crystalline membranes suffering a symmetry-breaking phase transition. The kinetic process leading the system toward equilibrium is described through a Brazovskii-Helfrich-Canham Hamiltonian. In membranes, a negative disclination has a larger energy than a positive disclination. Here we show that this energetic asymmetry does not only affect equilibrium properties, like the Kosterlitz-Thouless transition temperature, but also plays a fundamental role in the dynamic of defects. Both unbinding of dislocations and Carraro-Nelson "antiferromagnetic" interactions between disclinations slow down the dynamics below the Lifshitz-Safran regime observed in flat hexagonal systems.
authors.affiliation: Department of Physics and Instituto de Física del Sur, Universidad Nacional del Sur-CONICET, Av LN Além 1253, 8000 Bahía Blanca, Argentina.
authors.forename: Aldo D
authors.initials: AD
authors.lastname: Pezzutti
authors.forename: Daniel A
authors.initials: DA
authors.lastname: Vega
mesh_terms: D000465:Algorithms; D001703:Biophysics / Q000379:methods*; D003460:Crystallization; D004058:Diffusion; D007700:Kinetics; D008051:Lipid Bilayers / Q000737:chemistry; D008422:Materials Testing; D008566:Membranes / Q000737:chemistry*; D015233:Models, Statistical; D010825:Physics / Q000379:methods; D012044:Regression Analysis; D013696:Temperature
chemical_list: D008051:Lipid Bilayers