|
Hokkaido University Collection of Scholarly and Academic Papers >
Research Institute for Electronic Science >
Peer-reviewed Journal Articles, etc >
Destabilization of Fronts in a Class of Bistable Systems
| Title: | Destabilization of Fronts in a Class of Bistable Systems |
| Authors: | Doelman, Arjen Browse this author | | Iron, David Browse this author | | Nishiura, Yasumasa Browse this author →KAKEN DB |
| Keywords: | pattern formation | | bistable systems | | geometric singular perturbation theory | | stability analysis | | Evans functions | | AMS subject classifications = 35B25 | | AMS subject classifications = 35B32 | | AMS subject classifications = 35B35 | | AMS subject classifications = 35K57 | | AMS subject classifications = 35P20 | | AMS subject classifications = 34A26 | | AMS subject classifications = 34C37 |
| Issue Date: | 2004 |
| Publisher: | Society for Industrial and Applied Mathematics |
| Journal Title: | SIAM Journal on Mathematical Analysis |
| Volume: | 35 |
| Issue: | 6 |
| Start Page: | 1420 |
| End Page: | 1450 |
| Publisher DOI: | 10.1137/S0036141002419242 |
| Abstract: | In this article, we consider a class of bistable reaction-diffusion equations in two components on the real line. We assume that the system is singularly perturbed, i.e., that the ratio of the diffusion coefficients is (asymptotically) small. This class admits front solutions that are asymptotically close to the (stable) front solution of the “trivial” scalar bistable limit system ut = uxx+u(1−u2). However, in the system these fronts can become unstable by varying parameters. This destabilization is caused by either the essential spectrum associated to the linearized stability problem or by an eigenvalue that exists near the essential spectrum. We use the Evans function to study the various bifurcation mechanisms and establish an explicit connection between the character of the destabilization and the possible appearance of saddle-node bifurcations of heteroclinic orbits in the existence problem. |
| Rights: | © 2004 Society for Industrial and Applied Mathematics |
| Type: | article |
| URI: | http://hdl.handle.net/2115/35225 |
| Appears in Collections: | 電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 西浦 廉政
|
