Inchworm Monte Carlo for exact non-adiabatic dynamics II. Benchmarks and comparison with established methods

摘要

In this second paper of a two part series, we present extensive benchmarkresults for two different inchworm Monte Carlo expansions for the spin-bosonmodel. Our results are compared to previously developed numerically exactapproaches for this problem. A detailed discussion of convergence and errorpropagation is presented. Our results and analysis allow for an understandingof the benefits and drawbacks of inchworm Monte Carlo compared to otherapproaches for exact real-time non-adiabatic quantum dynamics.