Well-posedness for the fourth-order Schrödinger equation with third order derivative nonlinearities

Abstract

We study the Cauchy problem to the semilinear fourth-order Schrödinger equations: \begin{equation}\label{0-1}\tag{4NLS} \begin{cases} i\partial_t u+\partial_x^4u=G\left(\left\{\partial_x^{k}u\right\}_{k\le γ},\left\{\partial_x^{k}\bar{u}\right\}_{k\le γ}\right), & t>0,\ x\in \mathbb{R}, \\ \ \ \ u|_{t=0}=u_0\in H^s(\mathbb{R}), \end{cases} \end{equation} where $\gamma \in \{1,2,3\}$ and the unknown function $u=u(t,x)$ is complex valued. In this paper, we consider the nonlinearity $G$ of the polynomial \[ G(z)=G(z_1,\cdots,z_{2(γ+1)}) :=\sum_{m\le |α|\le l}C_αz^α, \] for $z\in {\mathbb{C}}^{2(\gamma +1)}$, where $m,l\in \mathbb{N}$ with $3\le m\le l$ and $C_{\alpha }\in \mathbb{C}$ with $\alpha \in (\mathbb{N}\cup \{0\}{)}^{2(\gamma +1)}$ is a constant. The purpose of the present paper is to prove well-posedness of the problem (\ref{0-1}) in the lower order Sobolev space $H^s(\mathbb{R})$ or with more general nonlinearities than previous results. Our proof of the main results is based on the contraction mapping principle on a suitable function space employed by D. Pornnopparath (2018). To obtain the key linear and bilinear estimates, we construct a suitable decomposition of the Duhamel term introduced by I. Bejenaru, A. D. Ionescu, C. E. Kenig, and D. Tataru (2011). Moreover we discuss scattering of global solutions and the optimality for the regularity of our well-posedness results, namely we prove that the flow map is not smooth in several cases.

73pages

References in corpus (1)

• Wellposedness of Cauchy problem for the Fourth Order Nonlinear Schrödinger Equations in Multi-dimensional Spaces

Cited by in corpus (3)

• Well-posedness for the NLS hierarchy
• Norm inflation for a higher-order nonlinear Schrödinger equation with a derivative on the circle
• Norm inflation for quadratic derivative fractional nonlinear Schrödinger equations