The role of defects in the transition between different symmetries in convective patterns

Year: 1991

Authors: Ciliberto S., Pampaloni E., Perez Garcia C.

Autors Affiliation: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy;
Departamento de Fisica, Universidad de Navarra, Spain

Abstract: The properties of the transition between two patterns with different symmetries are studied in an experiment on thermal convection in a fluid layer heated from below. The defect structure is also analyzed and it is found that the unstable phase is present in the defect cores. The experimental results are in agreement with a model of three coupled Ginzburg-Landau equations.

Journal/Review: JOURNAL OF STATISTICAL PHYSICS

Volume: 64 (5-6)      Pages from: 1045  to: 1058

KeyWords: RAYLEIGH-BENARD INSTABILITY; AMPLITUDE EQUATION; GINZBURG-LANDAU EQUATION
DOI: 10.1007/BF01048813

Citations: 10
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