Abstract and Applied Analysis

Homoclinic Solutions for a Class of Second Order Nonautonomous Singular Hamiltonian Systems

Ziheng Zhang, Fang-Fang Liao, and Patricia J. Y. Wong

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Abstract

We are concerned with the existence of homoclinic solutions for the following second order nonautonomous singular Hamiltonian systems u ¨ + a t W u u = 0 , (HS) where - < t < + , u = u 1 , u 2 ,   , u N N N 3 , a : is a continuous bounded function, and the potential W : N { ξ } has a singularity at 0 ξ N , and W u u is the gradient of W at u . The novelty of this paper is that, for the case that N 3 and (HS) is nonautonomous (neither periodic nor almost periodic), we show that (HS) possesses at least one nontrivial homoclinic solution. Our main hypotheses are the strong force condition of Gordon and the uniqueness of a global maximum of W . Different from the cases that (HS) is autonomous a t 1 or (HS) is periodic or almost periodic, as far as we know, this is the first result concerning the case that (HS) is nonautonomous and N 3 . Besides the usual conditions on W , we need the assumption that a t < 0 for all t to guarantee the existence of homoclinic solution. Recent results in the literature are generalized and significantly improved.

Article information

Source
Abstr. Appl. Anal., Volume 2014 (2014), Article ID 829052, 8 pages.

Dates
First available in Project Euclid: 2 October 2014

Permanent link to this document
https://projecteuclid.org/euclid.aaa/1412273170

Digital Object Identifier
doi:10.1155/2014/829052

Mathematical Reviews number (MathSciNet)
MR3173293

Zentralblatt MATH identifier
07023152

Citation

Zhang, Ziheng; Liao, Fang-Fang; Wong, Patricia J. Y. Homoclinic Solutions for a Class of Second Order Nonautonomous Singular Hamiltonian Systems. Abstr. Appl. Anal. 2014 (2014), Article ID 829052, 8 pages. doi:10.1155/2014/829052. https://projecteuclid.org/euclid.aaa/1412273170


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