In the present paper, we study the orbital stability and instability of standing waves of the Klein–Gordon–Schrödinger system. Especially, we are interested in a standing wave which is expressed by the unique positive solution to a certain scalar field equation. By utilizing the property of the positive solution , we can apply the general theory of Grillakis, Shatah and Strauss (1987) [11] and show the stability and instability of the standing wave.
@article{AIHPC_2011__28_2_315_0, author = {Kikuchi, Hiroaki}, title = {Orbital stability of semitrivial standing waves for the Klein--Gordon--Schr\"odinger system}, journal = {Annales de l'I.H.P. Analyse non lin\'eaire}, volume = {28}, year = {2011}, pages = {315-323}, doi = {10.1016/j.anihpc.2011.02.003}, mrnumber = {2784074}, zbl = {1216.35116}, language = {en}, url = {http://dml.mathdoc.fr/item/AIHPC_2011__28_2_315_0} }
Kikuchi, Hiroaki. Orbital stability of semitrivial standing waves for the Klein–Gordon–Schrödinger system. Annales de l'I.H.P. Analyse non linéaire, Tome 28 (2011) pp. 315-323. doi : 10.1016/j.anihpc.2011.02.003. http://gdmltest.u-ga.fr/item/AIHPC_2011__28_2_315_0/
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