Description
By employing an open quantum systems framework, we investigate heat current within a quantum system interfaced with baths at distinct temperatures. While the Redfield equation is conventionally applied for such analyses, its applicability is restricted to weak coupling regimes. To address systems with stronger coupling to the environments, we adopt a non-perturbative approach utilizing the Hierarchical Equations of Motion [1]. This method enables exploration of regions characterized by strong coupling to the surrounding environments, offering a comprehensive understanding of heat dynamics. For this purpose, we have adapted the scalable DM-HEOM [2, 3] implementation to accommodate baths at different temperatures.References:
[1] Y. Tanimura, R. Kubo "Time evolution of a quantum system in contact with a nearly Gaussian-Markoffian noise bath" J. Phys. Soc. Jpn. 1989, 58, 101.
[2] T. Kramer, M. Noack, A. Reinefeld, M. Rodríguez, and Y. Zelinskyy, “Efficient calculation of open quantum system dynamics and time-resolved spectroscopy with distributed memory HEOM (DM-HEOM),” doi: 10.1002/jcc.25354.
[3] M. Noack, A. Reinefeld, T. Kramer and T. Steinke, "DM-HEOM: A Portable and Scalable Solver-Framework for the Hierarchical Equations of Motion," doi: 10.1109/IPDPSW.2018.00149.
| Period | 24 Jun 2024 → 28 Jun 2024 |
|---|---|
| Held at | Max Planck Institute for the Physics of Complex Systems, Germany, Saxony |
| Degree of Recognition | International |
Fields of science
- 103 Physics, Astronomy