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arXiv 1009.2138math.AP
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一类插值不等式的径向对称性与对称破缺

Radial symmetry and symmetry breaking for some interpolation inequalities

Jean Dolbeault, Maria J. Esteban, Gabriella Tarantello, Achiles Tertikas

摘要:

我们分析了径向对称的极值一类插值不等式称为Caffarelli-Kohn-Nirenberg不等式,一类加权对数Hardy不等式出现的第一个的极限情况。在这两个类中,我们表明,存在一个连续的表面,分裂成一个区域的极值是对称的和对称性破缺发生的区域的一组容许参数。在以前的结果中,对称性破缺区域是通过显示径向极值的线性不稳定性来确定的。在这里,我们证明了对称性,甚至可以打破径向极值对应于局部极小值的变分问题与不等式的参数集。对于插值不等式,这种对称破缺现象是全新的。

英文摘要:

We analyze the radial symmetry of extremals for a class of interpolation inequalities known as Caffarelli-Kohn-Nirenberg inequalities, and for a class of weighted logarithmic Hardy inequalities which appear as limiting cases of the first ones. In both classes we show that there exists a continuous surface that splits the set of admissible parameters into a region where extremals are symmetric and a region where symmetry breaking occurs. In previous results, the symmetry breaking region was identified by showing the linear instability of the radial extremals. Here we prove that symmetry can be broken even within the set of parameters where radial extremals correspond to local minima for the variational problem associated with the inequality. For interpolation inequalities, such a symmetry breaking phenomenon is entirely new.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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