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math.AP2002
Polynomial upper bounds for the instability of the Nonlinear Schrödinger equation below the energy norm
J. Colliander, M. Keel, G. Staffilani +2
We continue the study (initiated in \cite{ckstt:7}) of the orbital stability of the ground state cylinder for focussing non-linear Schrödinger equations in the norm for…
math.AP2002★ 1 cited
Polynomial upper bounds for the orbital instability of the 1D cubic NLS below the energy norm
Jim Colliander, Mark Keel, Gigliola Staffilani +2
We study the long-time behaviour of the focusing cubic NLS on in the Sobolev norms for . We obtain polynomial growth-type upper bounds on the norms, and…
math.AP2002
Almost conservation laws and global rough solutions to a Nonlinear Schrödinger equation
J. Colliander, M. Keel, G. Staffilani +2
We prove an "almost conservation law" to obtain global-in-time well-posedness for the cubic, defocussing nonlinear Schrödinger equation in H^s(R^n) when n = 2, 3 and s > 4/7, 5/6,…