Title: Fast Forwarding the Dynamics of Imaginary Time and Master Equations
Abstract: Relaxational dynamics, such as classical master equation dynamics or quantum “imaginary time” evolution, have important applications but are bottlenecked by high dimensionality and long timescales in the approach to equilibrium. The high dimensional part of the challenge can be addressed by using a tensor network to represent the solution, but the slow dynamics remains difficult. Yet generic structure of such dynamics allows taking increasingly large steps, leading to an exponential improvement over fixed step sizes. Applications include quantum impurity problems and classical rate reaction dynamics.