### step_size

Quick definition The integrator step size used in the Hamiltonian simulation.

#### More details

All implementations of HMC use numerical integrators requiring a step size (equivalently, discretization time interval).
If `step_size` is too large, the leapfrog integrator will be inaccurate and too many proposals will be rejected. If `step_size` is too small, too many small steps will be taken by the leapfrog integrator leading to long simulation times per interval. Thus the goal is to balance the acceptance rate between these extremes.