On energy gap phenomena of the Whitney spheres in ${\mathbb{C}}^n$ or ${\mathbb{CP}}^n$

Yong Luo, Liuyang Zhang

In \cite{Zh} \cite{LY} Zhang, Luo and Yin initiated the study of Lagrangian submanifolds satisfying ${\nabla }^{\ast }T=0$ or ${\nabla }^{\ast }{\nabla }^{\ast }T=0$ in ${\mathbb{C}}^n$ or $\mathb…