January/February 2023 Critical problems with Hardy potential on Stratified Lie Groups
Annunziata Loiudice
Adv. Differential Equations 28(1/2): 1-33 (January/February 2023). DOI: 10.57262/ade028-0102-1


We prove existence and nonexistence results for positive solutions to the subelliptic Brezis-Nirenberg type problem with Hardy potential $$- \Delta_{\mathbb G} u -\mu \frac{\psi^2}{d^2} u =u^{2^*-1}+\lambda u\,\,\, \mbox{in}\,\,\, \Omega,\quad u=0\,\,\, \mbox{on}\,\, \partial \Omega, $$ extending to the Stratified setting well-known Euclidean results by Jannelli [J. Diff. Equ. 156, 1999]. Here, $\Delta_{\mathbb G}$ is a sub-Laplacian on an arbitrary Carnot group ${\mathbb G}$, $\Omega$ is a bounded domain of ${\mathbb G}$, $0\in \Omega$, $d$ is the $\Delta_{\mathbb G}$-gauge, $\psi:=|\Delta_{\mathbb G} d|$, where $\Delta_{\mathbb G}$ is the horizontal gradient associated to $\Delta_{\mathbb G}$, $0 \leq \mu < \bar \mu$, where $\bar \mu =\left ( \frac{Q-2}{2} \right )^2$ is the best Hardy constant on ${\mathbb G}$ and $\lambda\in {\mathbb R}$. The main difficulty in this abstract framework is the lack of knowledge of the ground state solutions to the limit problem $$- \Delta_{\mathbb G} u -\mu \dfrac{\psi^2}{d^2} u =u^{2^*-1}\,\, \mbox{on}\,\, {\mathbb G}, $$ whose explicit expression is not known, except for the case when $\mu=0$ and ${\mathbb G}$ is a group of Iwasawa-type. So, a preliminary refined analysis of qualitative properties of solutions to the above problem on the whole space is required, which has independent interest. In particular, Lorentz regularity and a priori decay estimates are obtained.


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Annunziata Loiudice. "Critical problems with Hardy potential on Stratified Lie Groups." Adv. Differential Equations 28 (1/2) 1 - 33, January/February 2023. https://doi.org/10.57262/ade028-0102-1


Published: January/February 2023
First available in Project Euclid: 12 September 2022

Digital Object Identifier: 10.57262/ade028-0102-1

Primary: 35B33 , 35B45 , 35J20 , 35J70 , 35R03

Rights: Copyright © 2023 Khayyam Publishing, Inc.


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Vol.28 • No. 1/2 • January/February 2023
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