| dc.creator | Forbert, HA | |
| dc.creator | Chin, Siu A. | |
| dc.date.accessioned | 2012-09-19T20:00:40Z | |
| dc.date.available | 2012-09-19T20:00:40Z | |
| dc.date.issued | 2001 | |
| dc.identifier.citation | HA Forbert and Siu A. Chin. Phys.Rev.B 63 144518 2001."Copyright (2001) by the American Physical Society." | en |
| dc.identifier.uri | http://dx.doi.org/10.1103/PhysRevB.63.144518 | |
| dc.identifier.uri | https://hdl.handle.net/1969.1/146787 | |
| dc.description | Journals published by the American Physical Society can be found at http://journals.aps.org/ | en |
| dc.description.abstract | By decomposing the important sampled imaginary time Schrodinger evolution operator to fourth order with positive coefficients, we derived a number of distinct fourth-order diffusion Monte Carlo algorithms. These sophisticated algorithms require higher derivatives of the drift velocity and local energy and are more complicated to program. However, they allowed very large time steps to be used, converged faster with lesser correlations, and virtually eliminated the step size error. We demonstrated the effectiveness of these quartic algorithms by solving for the ground-state energy and radial density distribution of bulk liquid helium. | en |
| dc.language.iso | en | |
| dc.publisher | American Physical Society | |
| dc.rights | This work is archived in the Texas A&M Digital Repository with the express permission of the rights holder (commonly but not always the publisher). A copy of the permission document is on file with the Texas A&M University Libraries. | en |
| dc.subject | SYSTEMS | en |
| dc.subject | HELIUM | en |
| dc.subject | ENERGY | en |
| dc.subject | Physics | en |
| dc.title | Fourth-order diffusion Monte Carlo algorithms for solving quantum many-body problems | en |
| dc.type | Article | en |
| local.department | Physics and Astronomy | en |
