In a recent article, C. Bardos et al. constructed weak solutions of the three-dimensional incompressible Euler equations which emerge from two-dimensional initial data yet become fully three-dimensional at positive times. They asked whether such symmetry-breaking solutions could also be constructed under the additional condition that they should have non-increasing energy. In this note, we give a positive answer to this question and show that such a construction is possible for a large class of initial data. We use convex integration techniques as developed by De Lellis and Székelyhidi.
Récemment, C. Bardos et al. ont construit des solutions faibles de lʼéquation dʼEuler incompressible en dimension trois qui sont vraiment tridimensionnelles aux temps positifs, bien quʼelles émergent dʼune donnée initiale bidimensionnelle. Les auteurs se sont demandé si une telle construction était possible sous la condition additionnelle que les solutions aient une énergie non croissante. Dans cette note, on résout cette question en montrant quʼune telle construction est en fait possible pour une grande famille de données initiales. On utilise la méthode dʼintégration convexe de De Lellis et Székelyhidi.
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Emil Wiedemann 1
@article{CRMATH_2013__351_23-24_907_0, author = {Emil Wiedemann}, title = {Inviscid symmetry breaking with non-increasing energy}, journal = {Comptes Rendus. Math\'ematique}, pages = {907--910}, publisher = {Elsevier}, volume = {351}, number = {23-24}, year = {2013}, doi = {10.1016/j.crma.2013.10.021}, language = {en}, }
Emil Wiedemann. Inviscid symmetry breaking with non-increasing energy. Comptes Rendus. Mathématique, Volume 351 (2013) no. 23-24, pp. 907-910. doi : 10.1016/j.crma.2013.10.021. https://comptes-rendus.academie-sciences.fr/mathematique/articles/10.1016/j.crma.2013.10.021/
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