A scenario for symmetry breaking in Caffarelli–Kohn–Nirenberg inequalities

J. Dolbeault; M. J. Esteban

doi:10.1515/jnum-2012-0012

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A scenario for symmetry breaking in Caffarelli–Kohn–Nirenberg inequalities

J. Dolbeault and M. J. Esteban

Published/Copyright: March 30, 2013

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From the journal Journal of Numerical Mathematics Volume 20 Issue 3-4

Abstract

-The purpose of this paper is to explain the phenomenon of symmetry breaking for optimal functions in functional inequalities by the numerical computations of some well chosen solutions of the corresponding Euler-Lagrange equations. For many of those inequalities it was believed that the only source of symmetry breaking would be the instability of the symmetric optimizer in the class of all admissible functions. But recently, it was shown by an indirect argument that for some Caffarelli-Kohn-Nirenberg inequalities this conjecture was not true. In order to understand this new symmetry breaking mechanism we have computed the branch of minimal solutions for a simple problem. A reparametrization of this branch allows us to build a scenario for the new phenomenon of symmetry breaking. The computations have been performed using freefem++.

Keywords : ground state; Schr¨odinger operator; Caffarelli-Kohn-Nirenberg inequality; radial symmetry; symmetry breaking; Roothan method; self-adaptive mesh; fixed point; bifurcation; finite element method; freefem++

Published Online: 2013-03-30

Published in Print: 2012-12

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Articles in the same Issue

https://doi.org/10.1515/jnum-2012-0012

Keywords for this article

ground state; Schr¨odinger operator; Caffarelli-Kohn-Nirenberg inequality; radial symmetry; symmetry breaking; Roothan method; self-adaptive mesh; fixed point; bifurcation; finite element method; freefem++