Published Paper

Inserted: 25 mar 2025
Last Updated: 1 dec 2025

Journal: Proc. Roy. Soc. Edinburgh Sect. A
Year: 2025
Doi: 10.1017/prm.2025.10100

Abstract:

Given $p\in[1,\infty)$ and a bounded open set $\Omega\subset\mathbb R^d$ with Lipschitz boundary, we study the $\Gamma$-convergence of the weighted fractional seminorm \[ [u]_{s,p,f}^p = \int_{\mathbb R^d} \int_{\mathbb R^d} \frac{ \vert \tilde u(x)- \tilde u(y) \vert ^p}{\Vert x-y\Vert^{d+sp}}\,f(x)\,f(y)\,\mathrm{d} x\,\mathrm{d} y \] as $s\to1^-$ for $u\in L^p(\Omega)$, where $\tilde u=u$ on $\Omega$ and $\tilde u=0$ on $\mathbb R^d\setminus\Omega$. Assuming that $(f_s)_{s\in(0,1)}\subset L^\infty(\mathbb R^d;[0,\infty))$ and $f\in\mathrm{Lip}_b(\mathbb R^d;(0,\infty))$ are such that $f_s\to f$ in $L^\infty(\mathbb R^d)$ as $s\to1^-$, we show that $(1-s)[u]_{s,p,f_s}$ $\Gamma$-converges to the Dirichlet $p$-energy weighted by $f^2$. In the case $p=2$, we also prove the convergence of the corresponding gradient flows.

Keywords: $\Gamma$-convergence, Gagliardo seminorms, fractional gradient flows, parabolic flows, weighted spaces

Download:

• Kubin, Saracco, Stefani - On the Γ-limit of weighted fractional energies