安萨茨
非线性系统
上下界
数学
工作(物理)
数学证明
应用数学
数学分析
物理
统计物理学
作者
Beomjong Kwak,Soonsik Kwon
摘要
In this paper, we investigate a universal blow-up bound for the focusing mass-critical nonlinear Schrödinger equation for general initial data in $L^2(\mathbb R^d)$, extending previous knowledge for mass near the ground-state threshold due to Merle and Raphaël. The main results are twofold. First, we show the nonexistence of self-similar rate blow-up solutions. Second, under radial symmetry, we establish the sharp log--log correction to the self-similar bound on the blow-up rate. The proofs are based on a new analysis of general blow-up solutions, which does not rely on any ansatz or variational structure.
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