Recorded 14 April 2022. Nandini Ananth of Cornell University, Chemistry, presents "Quantum dynamics from classical trajectories" at IPAM's Model Reduction in Quantum Mechanics Workshop. Abstract: Semiclassical approximations based on the path integral formulation of quantum mechanics employ classical paths to describe quantum behavior. However, applications have been limited to low-dimensional systems by the infamous dynamic sign problem. This talk will describe on a novel semiclassical approach that modulates the phase contributions from different degrees of freedom systematically to enable quantum dynamic simulations in complex chemical systems. In addition, the challenges in efficiently evaluating the semiclassical prefactor and sampling path space will be discussed. Learn more online at: http://www.ipam.ucla.edu/programs/workshops/workshop-ii-model-reduction-in-quantum-mechanics/?tab=schedule