Mathematics – Analysis of PDEs
Scientific paper
2009-07-22
Mathematics
Analysis of PDEs
March 2009 version
Scientific paper
We consider the nonlinear Schrodinger equation with a cubic nonlinearity on
the circle, which is known to represent an integrable Hamiltonian system. We
construct a global coordinate systems, which puts this Hamiltonian into
standard normal form, so that it depends only on the actions of the system.
Grebert Benoît
Kappeler Thomas
Pöschel Jürgen
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