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arXiv 2602.14658math.APmath.OC
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非线性变分传输问题中梯度的Morrey估计

Morrey estimates for the gradient in non-linear variational transmission problems

University of Salerno(萨莱诺大学);Institute Élie Cartan, Université de Lorraine, CNRS(洛林大学、法国国家科学研究中心埃利嘉当研究所)

Luca Esposito, Lorenzo Lamberti

AI总结:

本文研究非线性变分传输问题中梯度的Morrey正则性,通过能量衰减估计证明梯度在Morrey空间中的局部可积性。

摘要:

我们研究了一类由非线性能量驱动、在给定界面处系数不连续的变分传输问题。模型设定由如下积分泛函组成:$$ \mathcal{F}(u;E)=\int_Ωσ_E(x)\,F(\nabla u)\,dx, $$ 其中系数$σ_E$在互补区域上取两个常数值,由一个$C^1$超曲面分隔开,而被积函数$F$满足标准的$p$-增长和单调性条件,且$p>2$。在非线性变分框架下,我们建立了局部Morrey空间中局部极小值解梯度的正则性,证明了$\nabla u\in L^{2,λ}_{\mathrm{loc}}(Ω)$对所有$0\leqλ<n$成立,前提是$2<p<\frac{2n}{n-2}$。证明基于能量在界面附近的定量衰减估计,首先在平坦配置中获得,然后通过适当的近似论证扩展到一般情况。

英文摘要:

We study a class of variational transmission problems driven by nonlinear energies with discontinuous coefficients across a prescribed interface. The model setting consists of integral functionals of the form \[ \mathcal{F}(u;E)=\int_Ωσ_E(x)\,F(\nabla u)\,dx, \] where the coefficient $σ_E$ takes two constant values on complementary regions separated by a $C^1$ hypersurface, and the integrand $F$ satisfies standard $p$-growth and monotonicity conditions with $p>2$. In this nonlinear variational framework, we establish local Morrey-space regularity for the gradient of local minimizers, proving that $\nabla u\in L^{2,λ}_{\mathrm{loc}}(Ω)$ for every $0\leqλ<n$, provided $2<p<\frac{2n}{n-2}$. The proof is based on quantitative decay estimates for the energy near the interface, first obtained in a flat configuration and then extended to the general case by a suitable approximation argument.

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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