Numerical implementation of some reweighted path integral methods
Numerical implementation of some reweighted path integral methods
The reweighted random series techniques provide finite-dimensional approximations to the quantum density matrix of a physical system that have fast asymptotic convergence. We study two special reweighted techniques that are based upon the Lévy–Ciesielski and Wiener–Fourier series, respectively. In agreement with the theoretical predictions, we demonstrate by numerical examples that …