Moreira, André G. and Baeurle, Stephan A. and Fredrickson, Glenn H. (2003) Global stationary phase and the sign problem. PHYSICAL REVIEW LETTERS, 91 (15): 150201. ISSN 0031-9007, 1079-7114
Full text not available from this repository.Abstract
We present a computational strategy for reducing the sign problem in the evaluation of high dimensional integrals with nonpositive definite weights whose logarithms are analytic. The method involves stochastic sampling with a positive semidefinite weight that is adaptively and optimally determined during the course of a simulation. The optimal criterion, which follows from a variational principle for analytic actions S(z), is a global stationary phase condition that the average gradient of the phase ImS along the sampling path vanishes. Numerical results are presented from simulations of a model adapted from statistical field theories of classical fluids.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MONTE-CARLO; SIMULATION; SYSTEMS; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 Jul 2021 10:59 |
| Last Modified: | 28 Jul 2021 10:59 |
| URI: | https://pred.uni-regensburg.de/id/eprint/38520 |
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