title: Topological instabilities of spherical vesicles.
abstract: Within the framework of the Helfrich elastic theory of membranes and of differential geometry, we study the relative stability of spherical vesicles and double bubbles. We find that not only temperature but also magnetic fields can induce topological transformations between spherical vesicles and double bubbles and provide a phase diagram for the equilibrium shapes.
authors: Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands.
authors: O V
authors: OV
authors: Manyuhina
authors: A
authors: A
authors: Fasolino
authors: P C M
authors: PC
authors: Christianen
authors: M I
authors: MI
authors: Katsnelson