Kang Lyu

collaborators

2 papers

math.SP2025

Weak separability and partial Fermi isospectrality of discrete periodic Schrödinger operators

Jifeng Chu, Kang Lyu, Chuan-Fu Yang

In this paper, we consider the discrete periodic Schrödinger operators $Δ + V$ on $Z^{d}$ , where $V$ is $Γ$ -periodic with $Γ=q_1 \mathbb{Z}\oplus q_2\mathbb{Z}\oplus\cdots\oplus q_d\m…

math-ph2024

On the perturbed periodic Schrödinger operators with separate resonant embedded eigenvalues

Kang Lyu, Chuanfu Yang

In this paper, we consider Schrödinger operators on $L^{2} (0, \infty)$ given by \begin{align} Hu=(H_0+V)u=-u^{\prime\prime}+V_0u+Vu,\nonumber \end{align} where $V_{0}$ is real, $1$ -peri…