The phaseless Auxiliary Field Quantum Monte Carlo method provides a well established approximation scheme for accurate calculations of ground state energies of many-fermions systems. Here we apply the method to the calculation of imaginary time correlation functions. We give a detailed description of the technique and we test the quality of the results for static and dynamic properties against exact values for small systems.
@article{arxiv.1311.1071,
title = {Imaginary Time Correlations and the phaseless Auxiliary Field Quantum Monte Carlo},
author = {M. Motta and D. E. Galli and S. Moroni and E. Vitali},
journal= {arXiv preprint arXiv:1311.1071},
year = {2015}
}