Invariance of the Gibbs Measure for the Schrodinger-Benjamin-Ono System
Abstract
Description
We prove the invariance of the Gibbs measure for the periodic Schrodinger-Benjamin-Ono system (when the coupling parameter |γ| \ne 0, 1) by establishing a new local well-posedness in a modified Sobolev space and constructing the Gibbs measure (which is in the sub-L^2 setting for the Benjamin-Ono part.) We also show the ill-posedness result in H^s(\mathbb{T}) \times H^{s-{1/2}}(\mathbb{T}) for s < {1/2} when |γ| \ne 0, 1 and for any s \in \mathbb{R} when |γ| =1.
22 pages
22 pages