Floquet Isospectrality of the Zero Potential for Discrete Periodic Schrödinger Operators

Matthew Faust, Wencai Liu, Rodrigo Matos +5

Let $\Gamma =q_1\mathbb{Z}\oplus q_2\mathbb{Z}\oplus \cdots \oplus q_d\mathbb{Z}$, with $q_j\in ({\mathbb{Z}}^{+}{)}^d$ for each $j\in \{1,\dots ,d\}$, and denote by $\Delta$ the discrete Laplacian…