Improvement of the grand canonical quantum Monte Carlo method at low temperatures
| Autor: | H. Müller-Krumbhaar, M. Ulmke |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Physics
Hubbard model Computer simulation Monte Carlo method Electronic structure Condensed Matter Physics Square (algebra) Electronic Optical and Magnetic Materials Grand canonical ensemble Correlation function (statistical mechanics) ddc:530 General Materials Science Statistical physics Fermi Gamma-ray Space Telescope |
| Zdroj: | Zeitschrift für Physik |
| ISSN: | 1434-6036 0722-3277 |
| DOI: | 10.1007/bf01323731 |
| Popis: | We introduce an improvement of the algorithm for the simulation of correlated fermi systems in the grand canonical ensemble. Using this new method the computer time grows no more with the square but essentially linearly with the inverse temperature. At low temperatures the number of operations is diminished by a factor typically between 5 and 20. We present results for correlation functions of the one-dimensional Hubbard model at various band fillings. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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