A1 Journal article (refereed)
Time-linear scaling nonequilibrium Green's function methods for real-time simulations of interacting electrons and bosons. I : Formalism (2022)
Pavlyukh, Y., Perfetto, E., Karlsson, D., van Leeuwen, R., & Stefanucci, G. (2022). Time-linear scaling nonequilibrium Green's function methods for real-time simulations of interacting electrons and bosons. I : Formalism. Physical Review B, 105(12), Article 125134. https://doi.org/10.1103/PhysRevB.105.125134
JYU authors or editors
Publication details
All authors or editors: Pavlyukh, Y.; Perfetto, E.; Karlsson, Daniel; van Leeuwen, Robert; Stefanucci, G.
Journal or series: Physical Review B
ISSN: 2469-9950
eISSN: 2469-9969
Publication year: 2022
Publication date: 28/03/2022
Volume: 105
Issue number: 12
Article number: 125134
Publisher: American Physical Society (APS)
Publication country: United States
Publication language: English
DOI: https://doi.org/10.1103/PhysRevB.105.125134
Publication open access: Not open
Publication channel open access:
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/81598
Abstract
Simulations of interacting electrons and bosons out of equilibrium, starting from first principles and aiming at realistic multiscale scenarios, is a grand theoretical challenge. Here, using the formalism of nonequilibrium Green's functions and relying in a crucial way on the recently discovered time-linear formulation of the Kadanoff-Baym equations, we present a versatile toolbox for the simulation of correlated electron-boson dynamics. A large class of methods are available, from the Ehrenfest to the dressed GD for the treatment of electron-boson interactions in combination with perturbative, i.e., Hartree-Fock and second-Born, or nonperturbative, i.e., GW and T matrices either without or with exchange effects, for the treatment of the Coulomb interaction. In all cases the numerical scaling is linear in time and the equations of motion satisfy all fundamental conservation laws.
Keywords: quantum physics; electrons; bosons; simulation
Contributing organizations
Related projects
- New approaches to quantum many-body theory
- Van Leeuwen, Robertus
- Research Council of Finland
Ministry reporting: Yes
VIRTA submission year: 2022
JUFO rating: 2