تقرير
Correlation Functions From Tensor Network Influence Functionals: The Case of the Spin-Boson Model
| العنوان: | Correlation Functions From Tensor Network Influence Functionals: The Case of the Spin-Boson Model |
|---|---|
| المؤلفون: | Nguyen, Haimi, Ng, Nathan, Lindoy, Lachlan P., Park, Gunhee, Millis, Andrew J., Chan, Garnet Kin-Lic, Reichman, David R. |
| سنة النشر: | 2024 |
| المجموعة: | Condensed Matter Physics (Other) |
| مصطلحات موضوعية: | Physics - Chemical Physics, Condensed Matter - Strongly Correlated Electrons |
| الوصف: | We investigate the application of matrix product state (MPS) representations of the influence functionals (IF) for the calculation of real-time equilibrium correlation functions in open quantum systems. Focusing specifically on the unbiased spin-boson model, we explore the use of IF-MPSs for complex time propagation, as well as IF-MPSs for constructing correlation functions in the steady state. We examine three different IF approaches: one based on the Kadanoff-Baym contour targeting correlation functions at all times, one based on a complex contour targeting the correlation function at a single time, and a steady state formulation which avoids imaginary or complex times, while providing access to correlation functions at all times. We show that within the IF language, the steady state formulation provides a powerful approach to evaluate equilibrium correlation functions. |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2406.15737 |
| رقم الأكسشن: | edsarx.2406.15737 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |