2 problems

Consider the Floquet system defined by the Hamiltonian model in equation, with parameters $(\mathbf h,\mathbf J)\in[-20,20]^{\times(3N-1)}$. Discrete time-crystal stability conject…

Let $H(t)$ be a time-dependent Hamiltonian with period $1$, let $U(0,t)$ be its time-evolution operator, and let $|\psi(t)\rangle=U(0,t)|\psi(0)\rangle$ be the state evolved from a…