Local/global well-posedness analysis of time-space fractional Schrödinger equation on $\mathbb{R}^{d}$

Based on the $ϕ(-Δ)$-type operator studied by Kim \cite[\emph{Adv. Math.}]{Kim2}, where $ϕ$ is the Bernstein function, this paper investigates a class of nonlinear time-space fractional Schrödinger equations that exhibit nonlocal effects in both time and space. The time part is derived from the model proposed by Narahari Achar, and the space part is a $ϕ(-Δ)$-type operator. Due to nonlocal effects, this invalidates the classical Strichartz estimate. Combining the asymptotic behavior of Mittag-Leffler functions, Hörmander multiplier theory and other methods of harmonic analysis, we establish the Gagliardo-Nirenberg inequality in the $ϕ$-Triebel-Lizorkin space studied by Mikulevičius \cite[\emph{Potential Anal.}]{Mikulevicius} and obtain some Sobolev estimates for the solution operator, thus establishing the global/local well-posedness of the equations in some Banach space. In particular, our results are complementary to those of Su \cite[\emph{J. Math. Anal. Appl.}]{Su}, and the methods are quite different.