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[en] Consider a closed lipid membrane (vesicle), modelled as a two-dimensional surface, described by a geometrical Hamiltonian that depends on its extrinsic curvature. The vanishing of its first variation determines the equilibrium configurations for the system. In this paper, we examine the second variation of the Hamiltonian about any given equilibrium, using an explicitly surface covariant geometrical approach. We identify the operator which determines the stability of equilibrium configurations
Journal
Journal of Physics. A, Mathematical and General; ISSN 0305-4470; 
; CODEN JPHAC5; v. 36(23); p. 6281-6295
; CODEN JPHAC5; v. 36(23); p. 6281-6295