Ground state solutions for a class of nonlinear Maxwell-Dirac system
Ground state solutions for a class of nonlinear Maxwell-Dirac system
This paper is concerned with the following nonlinear Maxwell-Dirac system\begin{equation*}\begin{cases}\displaystyle-i\sum^{3}_{k=1}\alpha_{k}\partial_{k}u + a\beta u + \omega u-\phi u =F_{u}(x,u),\\-\Delta \phi=4\pi|u|^{2,\\\end{cases} \end{equation*}for $x\in\R^{3}$. The Dirac operator is unbounded from below and above, so the associated energy functional is strongly indefinite. We use the linking and concentration compactness arguments to establish the existence …