Periodic and decaying solutions in discrete nonlinear Schrodinger with saturable nonlinearity

被引:67
|
作者
Pankov, Alexander [2 ]
Rothos, Vassilis [1 ]
机构
[1] Aristotle Univ Thessaloniki, Fac Engn, Sch Math Phys & Computat Sci, Thessaloniki 54124, Greece
[2] Morgan State Univ, Dept Math, Baltimore, MD 21251 USA
关键词
periodic and decaying solutions; discrete nonlinear Schrodinger; the Nehari manifolds;
D O I
10.1098/rspa.2008.0255
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
We demonstrate the existence of solutions in the discrete nonlinear Schrodinger equation (DNLS) with saturable nonlinearity. We consider two types of solutions to DNLS periodic and vanishing at infinity. Calculus of variations and the Nehari manifolds are employed to establish the existence of these solutions. We present some extensions of our results, combining the Nehari manifold approach and the Mountain Pass argument.
引用
收藏
页码:3219 / 3236
页数:18
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