scholarly journals Existence of positive solutions for a semilinear Schrödinger equation in R N $\mathbb{R}^{N}$

2015 ◽  
Vol 2015 (1) ◽  
Author(s):  
Houqing Fang ◽  
Jun Wang
2014 ◽  
Vol 16 (06) ◽  
pp. 1450034 ◽  
Author(s):  
Xiaoyu Zeng ◽  
Yimin Zhang ◽  
Huan-Song Zhou

We are concerned with positive solutions of a quasilinear Schrödinger equation with Hardy potential and critical exponent. Different from the semilinear equation, the Hardy term in our equation is not only singular, but also nonlinear. It seems unlikely to get solutions for our equation in H1(ℝN) ∩ L∞(ℝN) by using Nehari method as Liu–Liu–Wang [Ground states for quasilinear Schrödinger equations with critical growth, Calc. Var. Partial Differential Equations 46 (2013) 641–669]. In this paper, by transforming the quasilinear equation to a semilinear equation, we established the existence of positive solutions for the quasilinear Schrödinger equation in H1(ℝN) under suitable conditions.


Author(s):  
Yan Meng ◽  
Xianjiu Huang ◽  
Jianhua Chen

In this paper, we study the following generalized quasilinear Schrödinger equation − div ( g 2 ( u ) ∇ u ) + g ( u ) g ′ ( u ) | ∇ u | 2 + V ( x ) u = λ f ( x , u ) + h ( x , u ) , x ∈ R N , where λ > 0 , N ≥ 3 , g ∈ C 1 ( R , R + ) . By using a change of variable, we obtain the existence of positive solutions for this problem with concave and convex nonlinearities via the Mountain Pass Theorem. Our results generalize some existing results.


Author(s):  
Patricio Felmer ◽  
Alexander Quaas ◽  
Jinggang Tan

We study the existence of positive solutions for the nonlinear Schrödinger equation with the fractional LaplacianFurthermore, we analyse the regularity, decay and symmetry properties of these solutions.


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