3 problems

Let $\phi\in\mathscr{P}_\beta$ be a Bernstein-type pulse function, let $h$ be the step size parameter, and let $\Omega_j(h)$ denote the $j$th Magnus term. Let $\omega$ denote the f…

Consider generalizations of the algorithms based on truncating the Magnus series at higher orders for time-dependent Hamiltonian simulation. High-order Magnus superconvergence conj…

Let the Magnus series expansion for a time-dependent Hamiltonian be truncated after its second-order term. Second-order Magnus superconvergence conjecture. The resulting expansion…