{ "id": "1903.11292", "version": "v1", "published": "2019-03-27T08:44:36.000Z", "updated": "2019-03-27T08:44:36.000Z", "title": "Solitary wave solutions of a Whitham-Bousinessq system", "authors": [ "Evgueni Dinvay", "Dag Nilsson" ], "categories": [ "math.AP" ], "abstract": "The travelling wave problem for a particular bidirectional Whitham system modelling surface water waves is under consideration. This system firstly appeared in [Dinvay, Dutykh, Kalisch 2018], where it was numerically shown to be stable and a good approximation to the incompressible Euler equations. In subsequent papers [Dinvay 2018], [Dinvay, Tesfahun 2019] the initial-value problem was studied and well-posedness in classical Sobolev spaces was proved. Here we prove existence of solitary wave solutions and provide their asymptotic description. Our proof relies on a variational approach and a concentration-compactness argument. The main difficulties stem from the fact that in the considered Euler-Lagrange equation we have a non-local operator of positive order appearing both in the linear and non-linear parts.", "revisions": [ { "version": "v1", "updated": "2019-03-27T08:44:36.000Z" } ], "analyses": { "subjects": [ "76B15", "76B25", "35S30" ], "keywords": [ "solitary wave solutions", "whitham-bousinessq system", "system modelling surface water waves", "bidirectional whitham system modelling surface", "whitham system modelling surface water" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }