Guangzhou Basic and Applied Basic Research Foundation
In any dimension N1N \geq 1, for given mass a>0, we look to critical points of the energy functional I(u)=12RNu2dx+RNu2u2dx1pRNupdx I(u) = \frac{1}{2}\int_{\mathbb{R}^N}|\nabla u|^2 dx + \int_{\mathbb{R}^N}u^2|\nabla u|^2 dx - \frac{1}{p}\int_{\mathbb{R}^N}|u|^p dx constrained to the set Sa={uXRNu2dx=a},\mathcal{S}_a=\{ u \in X | \int_{\mathbb{R}^N}| u|^2 dx = a\}, where X:=\left\{u \in H^1(\mathbb{R}^N)\Big| \int_{\mathbb{R}^N} u^2|\nabla u|^2 dx <\infty\right\}. We focus on the mass super-critical case 4+\frac{4}{N}0when when 1\leq N\leq 4.For. For N\geq 5,wefindanexplicitnumber, we find an explicit number a_0suchthattheexistenceofminimizeristrueifandonlyif such that the existence of minimizer is true if and only if a\in (0, a_0]$. In the mass super-critical case, the existence of a minimizer to the problem MaM_a, or more generally the existence of a constrained critical point of II on Sa\mathcal{S}_a, had hitherto only been obtained by assuming that p2p \leq 2^*. In particular, the restriction N3N \leq 3 was necessary. We also study the asymptotic behavior of the minimizers to MaM_a as the mass a0a \downarrow 0, as well as when aaa \uparrow a^*, where a=+a^*=+\infty for 1N41\leq N\leq 4, while a=a0a^*=a_0 for N5N\geq 5.
There are no more papers matching your filters at the moment.