Résumé
We introduce and compare three different Monte Carlo determinantal algorithms that allow one to compute dynamical quantities, such as the self-energy, of fermionic systems in their thermodynamic limit. We show that the most efficient approach expresses the sum of a factorial number of one-particle-irreducible diagrams as a recursive sum of determinants with exponential complexity. By comparing results for the two-dimensional Hubbard model with those obtained from state-of-the-art diagrammatic Monte Carlo, we show that we can reach higher perturbation orders and greater accuracy for the same computational effort.
| langue originale | Anglais |
|---|---|
| Numéro d'article | 085117 |
| journal | Physical Review B |
| Volume | 97 |
| Numéro de publication | 8 |
| Les DOIs | |
| état | Publié - 12 févr. 2018 |
| Modification externe | Oui |
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