Entire solutions of multivalued nonlinear Schrodinger equations in Sobolev spaces with variable exponent

Details Entire solutions of multivalued nonlinear Schrodinger equations in Sobolev spaces with variable exponent Entire solutions of multivalued nonlinear Schrodinger equations in Sobolev spaces with variable exponent

2005-11-07

arxiv.org/abs/math/0511184v1

Mathematics

Analysis of PDEs

Scientific paper

We establish the existence of an entire solution for a class of stationary Schr\"{o}dinger equations with subcritical discontinuous nonlinearity and lower bounded potential that blows-up at infinity. The abstract framework is related to Lebesgue-Sobolev spaces with variable exponent. The proof is based on the critical point theory in the sense of Clarke and we apply Chang's version of the Mountain Pass Lemma without the Palais-Smale condition for locally Lipschitz functionals. Our result generalizes in a nonsmooth framework a result of Rabinowitz on the existence of ground-state solutions of the nonlinear Schr\"{o}dinger equation.

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