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Existence and asymptotic behavior of standing waves of the nonlinear Helmholtz equation in the plane

  • Gilles Evéquoz EMAIL logo
Published/Copyright: March 18, 2017

Abstract

In this paper we study the semilinear elliptic problem

-Δu-k2u=Q|u|p-2uin 2,

where k>0, p6 and Q is a bounded function. We prove the existence of real-valued W2,p-solutions, both for decaying and for periodic coefficient Q. In addition, a nonlinear far-field relation is derived for these solutions.

MSC 2010: 35J20; 35J05

Award Identifier / Grant number: WE 2821/5-1

Funding statement: This research was supported by grant WE 2821/5-1 of the Deutsche Forschungsgemeinschaft (DFG).

Acknowledgements

The author expresses his thanks to Tobias Weth for suggesting the study of the two-dimensional case and for his valuable remarks on a preliminary version of the manuscript. The author also thanks the referee for his/her careful reading of the manuscript.

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Received: 2016-6-22
Revised: 2016-12-20
Accepted: 2017-1-20
Published Online: 2017-3-18
Published in Print: 2017-6-1

© 2017 Walter de Gruyter GmbH, Berlin/Boston

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