Two different sequences of infinitely many homoclinic solutions for a class of fractional Hamiltonian systems

  • A. Benhassine Higher Institute of Science Computer and Mathematics Monastir University, Tunisia
Keywords: DIFFERENT SEQUENCES

Abstract

UDC 517.9

We consider the problem of existence of infinitely many homoclinic solutions for the following fractional Hamiltonian systems:\begin{align}\begin{aligned}& -_{t}D^{\alpha}_{\infty}\left(_{-\infty}D^{\alpha}_{t}x(t)\right)-L(t)x(t)+\nabla W(t,x(t))=0,\\& x\in H^{\alpha}\left(\mathbb{R},\mathbb{R}^{N}\right),\end{aligned}\tag{FHS}\end{align}where $\alpha\in\left(\dfrac{1}{2},1\right],$ $t\in\mathbb{R},$ $x\in\mathbb{R}^N,$ and $_{-\infty}D^{\alpha}_{t}$  and $_{t}D^{\alpha}_{\infty}$ are the left and right Liouville\,--\,Weyl fractional derivatives of order $\alpha$ on the whole axis $\mathbb{R},$ respectively. The novelty of our results is that, under the assumption that  the nonlinearity $W\in C^{1}\big(\mathbb{R}\times\mathbb{R}^{N},\mathbb{R}\big)$ involves a combination of superquadratic and subquadratic terms, for the first time, we show that (FHS) possesses two different sequences of infinitely many homoclinic solutions via the Fountain theorem and the dual Fountain theorem such that the corresponding energy functional of (FHS) goes to infinity and zero, respectively. Some recent results available in the literature are generalized and significantly improved.

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Published
02.03.2023
How to Cite
BenhassineA. “Two Different Sequences of Infinitely Many Homoclinic Solutions for a Class of Fractional Hamiltonian Systems”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 75, no. 2, Mar. 2023, pp. 155 -67, doi:10.37863/umzh.v75i2.328.
Section
Research articles