R. Radha et M. Lakshmanan, LOCALIZED COHERENT STRUCTURES AND INTEGRABILITY IN A GENERALIZED (2-DIMENSIONAL NONLINEAR SCHRODINGER-EQUATION(1)), Chaos, solitons and fractals, 8(1), 1997, pp. 17-25
A generalized (2 + 1)-dimensional nonlinear Schrodinger equation intro
duced recently by Fokas is investigated and is shown to admit the Pain
leve property. The Hirota bilinearization directly follows from the si
ngularity analysis. Localized dromion solutions, which arise essential
ly due to the interaction of two nonparallel ghost solitons and locali
zed breather solutions (time oscillating solutions), are constructed u
sing the Hirota method. This method can be rigorously pursued to gener
ate multidromions and multibreathers. Copyright (C) 1997 Elsevier Scie
nce Ltd.