3,071 research outputs found
On KP-II type equations on cylinders
In this article we study the generalized dispersion version of the
Kadomtsev-Petviashvili II equation, on \T \times \R and \T \times \R^2. We
start by proving bilinear Strichartz type estimates, dependent only on the
dimension of the domain but not on the dispersion. Their analogues in terms of
Bourgain spaces are then used as the main tool for the proof of bilinear
estimates of the nonlinear terms of the equation and consequently of local
well-posedness for the Cauchy problem.Comment: 32 page
Scattering for nonlinear Schrodinger equation under partial harmonic confinement
We consider the nonlinear Schrodinger equation under a partial quadratic
confinement. We show that the global dispersion corresponding to the
direction(s) with no potential is enough to prove global in time Strichartz
estimates, from which we infer the existence of wave operators thanks to
suitable vector-fields. Conversely, given an initial Cauchy datum, the solution
is global in time and asymptotically free, provided that confinement affects
one spatial direction only. This stems from anisotropic Morawetz estimates,
involving a marginal of the position density.Comment: 26 pages. Some typos fixed, especially in Section
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