Abstract
Improvements beyond the primitive approximation in the path integral Monte Carlo method are explored both in a model problem and in real systems. Two different strategies are studied: The Richardson extrapolation on top of the path integral Monte Carlo data and the Takahashi-Imada action. The Richardson extrapolation, mainly combined with the primitive action, always reduces the number-of-beads dependence, helps in determining the approach to the dominant power law behavior, and all without additional computational cost. The Takahashi-Imada action has been tested in two hard-core interacting quantum liquids at low temperature. The results obtained show that the fourth-order behavior near the asymptote is conserved, and that the use of this improved action reduces the computing time with respect to the primitive approximation.
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Dates
Type | When |
---|---|
Created | 21 years, 2 months ago (June 23, 2004, 6:02 p.m.) |
Deposited | 1 year, 7 months ago (Jan. 13, 2024, 2:03 p.m.) |
Indexed | 1 year, 7 months ago (Jan. 13, 2024, 7:05 p.m.) |
Issued | 21 years, 2 months ago (June 24, 2004) |
Published | 21 years, 2 months ago (June 24, 2004) |
Published Online | 21 years, 2 months ago (June 24, 2004) |
Published Print | 21 years, 1 month ago (July 8, 2004) |
@article{Brualla_2004, title={Higher order and infinite Trotter-number extrapolations in path integral Monte Carlo}, volume={121}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1760512}, DOI={10.1063/1.1760512}, number={2}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Brualla, L. and Sakkos, K. and Boronat, J. and Casulleras, J.}, year={2004}, month=jun, pages={636–643} }