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arXiv 2409.02205math.AP
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通过Rayleigh商研究具有一般非线性项的非局部椭圆方程的地面态

Ground states of nonlocal elliptic equations with general nonlinearities via Rayleigh quotient

Diego Ferraz, Edcarlos D. Silva

AI总结:

本文利用非线性Rayleigh商方法研究一类具有一般非线性项和变号位势的非局部Schrödinger方程,在权函数不必有界的条件下得到精确阈值λ*,证明当λ∈(0,λ*)时至少存在两个非平凡解。

摘要:

本文建立了非局部Schrödinger方程 $(-Δ)^s u + V(x) u = λa(x) |u|^{q-2}u + b(x)f(u)$ 在 $\mathbb{R}^N$ 中、$u \in H^s(\mathbb{R}^N)$ 的地面态和解的多重性,其中 $0<s<\min\{1,N/2\}$,$1<q<2$ 且 $λ>0$,并在可测函数 $a$、$b$、$V$ 和 $f$ 的一般条件下进行研究。非线性项 $f$ 在无穷远处和原点处都是超线性的,并且不满足任何Ambrosetti-Rabinowitz型条件。本文考虑了权函数 $a$ 和 $b$ 不一定有界以及位势 $V$ 可以变号的情形。我们得到了一个精确的 $λ^*>0$,它保证对每个 $λ\in (0, λ^*)$ 至少存在两个非平凡解。我们的方法本质上是变分方法,并基于非线性Rayleigh商方法以及一些精细估计。本文还考虑了问题的紧性。

英文摘要:

It is established ground states and multiplicity of solutions for a nonlocal Schrödinger equation $(-Δ)^s u + V(x) u = λa(x) |u|^{q-2}u + b(x)f(u)$ in $\mathbb{R}^N,$ $u \in H^s(\mathbb{R}^N),$ where $0<s<\min\{1,N/2\},$ $1<q<2$ and $λ>0,$ under general conditions over the measurable functions $a,$ $b$, $V$ and $f.$ The nonlinearity $f$ is superlinear at infinity and at the origin, and does not satisfy any Ambrosetti-Rabinowitz type condition. It is considered that the weights $a$ and $b$ are not necessarily bounded and the potential $V$ can change sign. We obtained a sharp $λ^*> 0$ which guarantees the existence of at least two nontrivial solutions for each $λ\in (0, λ^*)$. Our approach is variational in its nature and is based on the nonlinear Rayleigh quotient method together with some fine estimates. Compactness of the problem is also considered.

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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