{ "id": "2010.05520", "version": "v1", "published": "2020-10-12T08:22:29.000Z", "updated": "2020-10-12T08:22:29.000Z", "title": "Long time behavior of solutions for a damped Benjamin-Ono equation", "authors": [ "Louise Gassot" ], "categories": [ "math.AP" ], "abstract": "We consider the Benjamin-Ono equation on the torus with an additional damping term on the smallest Fourier modes (cos and sin). We first prove global well-posedness of this equation in $L^2_{r,0}(\\mathbb{T})$. Then, we describe the weak limit points of the trajectories in $L^2_{r,0}(\\mathbb{T})$ when time goes to infinity, and show that these weak limit points are strong limit points. Finally, we prove the boundedness of higher-order Sobolev norms for this equation. Our key tool is the Birkhoff map for the Benjamin-Ono equation, that we use as an adapted nonlinear Fourier transform.", "revisions": [ { "version": "v1", "updated": "2020-10-12T08:22:29.000Z" } ], "analyses": { "keywords": [ "long time behavior", "damped benjamin-ono equation", "weak limit points", "strong limit points", "adapted nonlinear fourier transform" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }