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arXiv 2601.08573math.APmath-phmath.MP
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非局部奇异扰动与非凸泛函--近期成果

Non-local singular perturbations of non-convex functionals -- recent results

University of Rome Tor Vergata(罗马托维加塔大学)

Andrea Braides

AI总结:

本文研究非局部奇异扰动与非凸泛函的近期成果,探讨了分数阶和高阶半范数在相变和自由间断问题中的应用,结合了极限分析与Gamma展开理论。

摘要:

奇异扰动已被用于选择(非凸)变分问题的解,这些问题具有多个极小值解。此类方法的原型是L. Modica的相变梯度理论,他本人将S. Mortola在一篇开创性论文中包含的早期Gamma收敛结果进行了专门研究,验证了所谓的最小界面标准。我将概述一些关于具有分数阶和高阶半范数的扰动的近期结果,这些结果既涉及相变问题,也涉及自由间断问题,并将这些结果与Bourgain-Brezis-Mironescu和Maz'ya-Shaposhnikova对分数Sobolev半范数的极限分析以及Gamma展开理论联系起来。

英文摘要:

Singular perturbations have been used to select solutions of (non-convex) variational problems with a multiplicity of minimizers. The prototype of such an approach is the gradient theory of phase transitions by L. Modica, who specialized some earlier Gamma-convergence results by himself and S. Mortola contained in a seminal paper, validating the so-called minimal-interface criterion. I will give an overview of some recent results on perturbations with fractional and higher-order seminorms both in the framework of phase transitions and of free-discontinuity problems, relating these results with the Bourgain-Brezis-Mironescu and Maz'ya-Shaposhnikova limit analysis for fractional Sobolev seminorms, and with the theory of Gamma-expansions.

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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