Electron-phonon thermalization in a scalable method for real-time quantum dynamics
Journal Article
·
· Physical Review B
- Queen's Univ. Belfast, Northern Ireland (United Kingdom)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Here, we present a quantum simulation method that follows the dynamics of out-of-equilibrium many-body systems of electrons and oscillators in real time. Its cost is linear in the number of oscillators and it can probe time scales from attoseconds to hundreds of picoseconds. Contrary to Ehrenfest dynamics, it can thermalize starting from a variety of initial conditions, including electronic population inversion. While an electronic temperature can be defined in terms of a nonequilibrium entropy, a Fermi-Dirac distribution in general emerges only after thermalization. These results can be used to construct a kinetic model of electron-phonon equilibration based on the explicit quantum dynamics.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1351135
- Alternate ID(s):
- OSTI ID: 1236295
- Report Number(s):
- LLNL-JRNL-727623; PRBMDO
- Journal Information:
- Physical Review B, Vol. 93, Issue 2; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 17 works
Citation information provided by
Web of Science
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