The initial value problem for nonlinear Schrödinger equations

  1. Vega González, Luis
Libro:
Proceedings oh the International Congress of Mathematicians: Madrid, August 22-30,2006 : invited lectures
  1. Sanz Solé, Marta (coord.)
  2. Soria de Diego, Javier (coord.)
  3. Varona Malumbres, Juan Luis (coord.)
  4. Verdera, Joan (coord.)

Editorial: Zürich : European Mathematical Society, [2006

ISBN: 978-3-03719-022-7

Año de publicación: 2006

Volumen: 3

Páginas: 303-320

Tipo: Capítulo de Libro

Resumen

I will review some recent work done in collaboration with C. E. Kenig, G. Ponce and C. Rolvung on a general method to solve locally in time the initial value problem for non-linear Schrödinger equations under some natural hypotheses of decay and regularity of the coefficients. Also some non-trapping conditions of the solutions of the hamiltonian flowassociated to the initial data is needed. We will not assume ellipticity on the matrix of the leading order coefficients but just a non-degeneracy condition. The method is based on energy estimates which can be performed thanks to the construction of an integrating factor. This construction is of independent interest and relies on the analysis of some new pseudo-differential operators.