A continuous, non-negative boost po

A continuous, non-negative boost potential function DV(r) is defined such that when the true potential V(r) is below a chosen threshold boost energy E, the simulation is performed on the modified potential V⁄ (r) = V(r) + DV(r), and when V(r) is greater than E, the simulation is performed on the true potential V⁄(r) = V(r).