On the Cauchy problem for the inhomogeneous nonlinear Schr\"odinger equation with inverse-power potential

TL;DR

This paper investigates the well-posedness, global existence, and blow-up phenomena for the inhomogeneous nonlinear Schrödinger equation with inverse-power potential, extending previous results in fractional Sobolev spaces.

Contribution

It establishes local well-posedness in fractional Sobolev spaces and analyzes global behavior, including blow-up, for solutions with inverse-power potentials.

Findings

Local well-posedness in $H^s$ spaces for $s\,\geq 0$

Conditions for global existence of solutions

Criteria for finite-time blow-up of solutions

Abstract

In this paper, we study the Cauchy problem for the inhomogeneous nonlinear Schr\"{o}dinger equation with inverse-power potential \[iu_{t} +\Delta u-c|x|^{-a}u=\pm |x|^{-b} |u|^{\sigma } u,\;\;(t,x)\in \mathbb R\times\mathbb R^{d},\] where $d\in \mathbb N$, $c\in \mathbb R$, $a,b>0$ and $\sigma>0$. First, we establish the local well-posedness in the fractional Sobolev spaces $H^s(\mathbb R^d)$ with $s\ge 0$ by using contraction mapping principle based on the Strichartz estimates in Sobolev-Lorentz spaces. Next, the global existence and blow-up of $H^1$-solution are investigated. Our results extend the known results in several directions.