摘要:研究一類在 N 維空間中具雙冪非線性項的非線性 Schrdinger 方程駐波解的強(qiáng)不穩(wěn)定性. 首先, 利用 Gagliardo-Nirengberg 不等式、緊性引理和 Brézis-Lieb 引理得到駐波解的存在性. 再借助不規(guī)則的 Virial恒等式構(gòu)造出與方程相關(guān)的發(fā)展不變流形. 最后,通過對發(fā)展不變流形的研究獲得駐波解的強(qiáng)不穩(wěn)定性.
關(guān)鍵詞:部分勢;駐波;強(qiáng)不穩(wěn)定性
中圖分類號:O175. 29 文獻(xiàn)標(biāo)志碼:A 文章編號:1001-8395(2024)03-0394-07
doi:10. 3969 / j. issn. 1001-8395. 2024. 03. 011
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(編輯 劉 剛)