Classical-like trajectory simulations for accurate computation of quantum reactive scattering probabilities

► Accurate computation of quantum reactive scattering via classical-like simulation. ► Quantum effects along the reaction coordinate are described by a quantum trajectory. ► Classical modes are quantized via phase space sampling of the trajectory ensemble. ► Independent trajectories driven by a remarkably stable and accurate Newton-like ODE. ► One percent accuracy is achieved for multi-D benchmark systems with deep tunneling.