数学物理学报 ›› 2014, Vol. 34 ›› Issue (3): 691-702.

• 论文 • 上一篇    下一篇

SIGN-CHANGING SOLUTIONS FOR SCHRÖDINGER EQUATIONS WITH VANISHING AND SIGN-CHANGING POTENTIALS

吴元泽|黄毅生|刘增   

  1. College of Sciences, China University of Mining and Technology, Xuzhou 221116, China; Department of Mathematics, Soochow University, Suzhou 215006, China
  • 收稿日期:2012-10-25 修回日期:2013-07-27 出版日期:2014-05-20 发布日期:2014-05-20
  • 基金资助:

    The first author is supported by the Fundamental Research Funds for the Central Universities (2014QNA67).

SIGN-CHANGING SOLUTIONS FOR SCHRÖDINGER EQUATIONS WITH VANISHING AND SIGN-CHANGING POTENTIALS

 WU Yuan-Ze, HUANG Yi-Sheng, LIU Zeng   

  1. College of Sciences, China University of Mining and Technology, Xuzhou 221116, China; Department of Mathematics, Soochow University, Suzhou 215006, China
  • Received:2012-10-25 Revised:2013-07-27 Online:2014-05-20 Published:2014-05-20
  • Supported by:

    The first author is supported by the Fundamental Research Funds for the Central Universities (2014QNA67).

摘要:

In this article, we study the existence of sign-changing solutions for the following Schr¨odinger equation
−Δu + λV (x)u = K(x)|u|p−2u     x ∈RN, u →0 as |x| →+∞,
where N ≥ 3, λ > 0 is a parameter, 2 < p < 2N/N−2 , and the potentials V (x) and K(x) satisfy some suitable conditions. By using the method based on invariant sets of the descending flow, we obtain the existence of a positive ground state solution and a ground state sign-changing solution of the above equation for small λ, which is a complement of the results obtained by Wang and Zhou in [J. Math. Phys. 52, 113704, 2011].

关键词: Variational methods, bounded state solutions, sign-changing solutions

Abstract:

In this article, we study the existence of sign-changing solutions for the following Schr¨odinger equation
−Δu + λV (x)u = K(x)|u|p−2u     x ∈RN, u →0 as |x| →+∞,
where N ≥ 3, λ > 0 is a parameter, 2 < p < 2N/N−2 , and the potentials V (x) and K(x) satisfy some suitable conditions. By using the method based on invariant sets of the descending flow, we obtain the existence of a positive ground state solution and a ground state sign-changing solution of the above equation for small λ, which is a complement of the results obtained by Wang and Zhou in [J. Math. Phys. 52, 113704, 2011].

Key words: Variational methods, bounded state solutions, sign-changing solutions

中图分类号: 

  • 58E05