par Almirantis, Yannis;Nicolis, Grégoire 
Référence Dynamics and Stability of Systems, 7, 4, page (199-206)
Publication Publié, 1992-01
Référence Dynamics and Stability of Systems, 7, 4, page (199-206)
Publication Publié, 1992-01
Article révisé par les pairs
| Résumé : | It is pointed out that in a reaction-diffusion system near a chiral symmetry-breaking instability, a weak drift term in the diffusion law can induce a systematic selection between macroscopic three-dimensional patterns of opposite chirality. When the cause of the drift term is an external field, the orientation of the field with respect to the system determines the final chiral choice. The possible appearance of a drift term in the diffusion law, arising from the intrinsic asymmetry of the underlying material is also considered. In a one-dimensional system with periodic boundary conditions it is shown that the drift term may account for systematic selection between waves rotating in opposite directions. © 1992, Taylor & Francis Group, LLC. All rights reserved. |
