2 problems

Let $\Delta$ be the finite-size gap and let $\Delta_{\text{LB}}$ denote the corresponding Laguerre bound. Consider the system size $L$ tending to infinity along an infinite-randomn…

Let $H_{\operatorname{BDI}}$ be an open chain of size $L$, whose related bulk Hamiltonian has winding number $\omega>0$ and is described by … Define … Suppose that $m(z)$ has singu…