Abstract
We present a time-linear scaling method to simulate open and correlated quantum systems out of equilibrium. The method inherits from many-body perturbation theory the possibility to choose selectively the most relevant scattering processes in the dynamics, thereby paving the way to the real-time characterization of correlated ultrafast phenomena in quantum transport. The open system dynamics is described in terms of an “embedding correlator” from which the time-dependent current can be calculated using the Meir-Wingreen formula. We show how to efficiently implement our approach through a simple grafting into recently proposed time-linear Green’s function methods for closed systems. Electron-electron and electron-phonon interactions can be treated on equal footing while preserving all fundamental conservation laws.
- Received 30 November 2022
- Accepted 15 May 2023
- Corrected 23 May 2024
DOI:https://doi.org/10.1103/PhysRevLett.130.246301
© 2023 American Physical Society
Physics Subject Headings (PhySH)
Corrections
23 May 2024
Correction: Support information in the second sentence in the Acknowledgements section was incomplete and has been fixed.