Acta mathematica scientia,Series B ›› 2020, Vol. 40 ›› Issue (5): 1585-1601.doi: 10.1007/s10473-020-0523-9

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POSITIVE SOLUTIONS AND INFINITELY MANY SOLUTIONS FOR A WEAKLY COUPLED SYSTEM

Xueliang DUAN1, Gongming WEI2, Haitao YANG3   

  1. 1. School of Mathematical Sciences, Zhejiang University, Hangzhou 310027, China;
    2. College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China;
    3. School of Mathematical Sciences, Zhejiang University, Hangzhou 310027, China
  • Received:2018-11-21 Revised:2019-12-02 Online:2020-10-25 Published:2020-11-04
  • Contact: Xueliang DUAN E-mail:xueliangduan@outlook.com

Abstract: We study a Schrödinger system with the sum of linear and nonlinear couplings. Applying index theory, we obtain infinitely many solutions for the system with periodic potentials. Moreover, by using the concentration compactness method, we prove the existence and nonexistence of ground state solutions for the system with close-to-periodic potentials.

CLC Number: 

  • 35A15
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