Fourier-Matsubara series expansion for imaginary-time correlation functions
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2024
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866909256240857088 |
|---|---|
| author | Tolias, Panagiotis Kalkavouras, Fotios Dornheim, Tobias |
| author_facet | Tolias, Panagiotis Kalkavouras, Fotios Dornheim, Tobias |
| contents | A Fourier-Matsubara series expansion is derived for imaginary-time correlation functions that constitutes the imaginary-time generalization of the infinite Matsubara series for equal-time correlation functions. The expansion is consistent with all known exact properties of imaginary-time correlation functions and opens up new avenues for the utilization of quantum Monte Carlo simulation data. Moreover, the expansion drastically simplifies the computation of imaginary-time density-density correlation functions with the finite temperature version of the self-consistent dielectric formalism. Its existence underscores the utility of imaginary-time as a complementary domain for many-body physics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_01838 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Fourier-Matsubara series expansion for imaginary-time correlation functions Tolias, Panagiotis Kalkavouras, Fotios Dornheim, Tobias Strongly Correlated Electrons Quantum Gases Plasma Physics A Fourier-Matsubara series expansion is derived for imaginary-time correlation functions that constitutes the imaginary-time generalization of the infinite Matsubara series for equal-time correlation functions. The expansion is consistent with all known exact properties of imaginary-time correlation functions and opens up new avenues for the utilization of quantum Monte Carlo simulation data. Moreover, the expansion drastically simplifies the computation of imaginary-time density-density correlation functions with the finite temperature version of the self-consistent dielectric formalism. Its existence underscores the utility of imaginary-time as a complementary domain for many-body physics. |
| title | Fourier-Matsubara series expansion for imaginary-time correlation functions |
| topic | Strongly Correlated Electrons Quantum Gases Plasma Physics |
| url | https://arxiv.org/abs/2404.01838 |