AUTHOR=Zhang Xue , Zhang Jing
TITLE=Existence of a ground-state solution for a quasilinear Schrödinger system
JOURNAL=Frontiers in Physics
VOLUME=12
YEAR=2024
URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2024.1386144
DOI=10.3389/fphy.2024.1386144
ISSN=2296-424X
ABSTRACT=
In this paper, we consider the following quasilinear Schrödinger system.−Δu+u+k2Δ|u|2u=2αα+β|u|α−2u|v|β,x∈RN,−Δv+v+k2Δ|v|2v=2βα+β|u|α|v|β−2v,x∈RN,
where k < 0 is a real constant, α > 1, β > 1, and α + β < 2*. We take advantage of the critical point theorem developed by Jeanjean (Proc. R. Soc. Edinburgh Sect A., 1999, 129: 787–809) and combine it with Pohožaev identity to obtain the existence of a ground-state solution, which is the non-trivial solution with the least possible energy.