Real-time correlation functions from imaginary-time evolution
| dc.creator | Kornilovitch, P. E. | |
| dc.date | 2000-10-06 | |
| dc.date | 2001-06-06 | |
| dc.date.accessioned | 2026-07-07T02:38:56Z | |
| dc.date.available | 2026-07-07T02:38:56Z | |
| dc.description | The problem of calculating real-time correlation functions is formulated in terms of an imaginary-time partial differential equation. The latter is solved analytically for the perturbed harmonic oscillator and compared with the known exact result. The first order approximation for the short-time propagator is derived and used for numerical solution of the equation by a Monte Carlo integration. In general, the method provides a reformulation of the dynamic sign problem, and is applicable to any two-time correlation function including single-particle, density-density, current-current, spin-spin, and others. The prospects of extending the technique onto multi-dimensional problems are discussed. | |
| dc.description | 10 pages, 6 figures, extended version with many new results | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0010100 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0010100 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/16872 | |
| dc.subject | Statistical Mechanics | |
| dc.subject | High Energy Physics - Lattice | |
| dc.title | Real-time correlation functions from imaginary-time evolution | |
| dc.type | text |