We prove that the initial value problem for the semi-linear Schrödinger and wave equations is well-posed in the Besov space , when the nonlinearity is of type , for . This allows us to obtain self-similar solutions, as well as to recover previously known results for the solutions under weaker smallness assumptions on the data.
@article{JEDP_1999____A9_0, author = {Planchon, Fabrice}, title = {Self-similar solutions and Besov spaces for semi-linear Schr\"odinger and wave equations}, journal = {Journ\'ees \'equations aux d\'eriv\'ees partielles}, year = {1999}, pages = {1-11}, zbl = {01810582}, language = {en}, url = {http://dml.mathdoc.fr/item/JEDP_1999____A9_0} }
Planchon, Fabrice. Self-similar solutions and Besov spaces for semi-linear Schrödinger and wave equations. Journées équations aux dérivées partielles, (1999), pp. 1-11. http://gdmltest.u-ga.fr/item/JEDP_1999____A9_0/
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