Electron-phonon thermalization in a scalable method for real-time quantum dynamics
Mesoscale and Nanoscale Physics
2016-01-28 v2
Abstract
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 timescales 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 non-equilibrium entropy, a Fermi-Dirac distribution in general emerges only after thermalization. The time evolution of the populations is rationalized in terms of a kinetic model.
Keywords
Cite
@article{arxiv.1511.03875,
title = {Electron-phonon thermalization in a scalable method for real-time quantum dynamics},
author = {Valerio Rizzi and Tchavdar N. Todorov and Jorge J. Kohanoff and Alfredo A. Correa},
journal= {arXiv preprint arXiv:1511.03875},
year = {2016}
}