Constraints from anti-unitary symmetries on phase diagrams of sign problem-free models
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2025
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866915479761715200 |
|---|---|
| author | Zhang, Xu Bultinck, Nick |
| author_facet | Zhang, Xu Bultinck, Nick |
| contents | A powerful way to guarantee the absence of a sign problem in determinantal quantum Monte Carlo simulations is imposing a particular type of anti-unitary symmetries. It is shown that these same symmetries give rise to constraints on correlation functions, which can be used to identify local operators whose correlations upper bound those of a large class of physically relevant operators, including for example superconducting order parameters. Our results also help understand why it is difficult to realize generic finite-momentum orders in sign problem-free models. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_07747 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Constraints from anti-unitary symmetries on phase diagrams of sign problem-free models Zhang, Xu Bultinck, Nick Strongly Correlated Electrons Statistical Mechanics Superconductivity A powerful way to guarantee the absence of a sign problem in determinantal quantum Monte Carlo simulations is imposing a particular type of anti-unitary symmetries. It is shown that these same symmetries give rise to constraints on correlation functions, which can be used to identify local operators whose correlations upper bound those of a large class of physically relevant operators, including for example superconducting order parameters. Our results also help understand why it is difficult to realize generic finite-momentum orders in sign problem-free models. |
| title | Constraints from anti-unitary symmetries on phase diagrams of sign problem-free models |
| topic | Strongly Correlated Electrons Statistical Mechanics Superconductivity |
| url | https://arxiv.org/abs/2503.07747 |