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|α2u|v|β,xRN,Δv+v+k2Δ|v|2v=2βα+β|u|α|v|β2v,xRN,

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.