It is commonly assumed that the time-dependent electron flux calculated within the Born-Oppenheimer (BO) approximation vanishes. This is not necessarily true if the flux is directly determined from the continuity equation obeyed by the electron density. This finding is illustrated for a one-dimensional model of coupled electronic-nuclear dynamics. There, the BO flux is in perfect agreement with the one calculated from a solution of the time-dependent Schrödinger equation for the coupled motion. A reflection principle is derived where the nuclear BO flux is mapped onto the electronic flux.
Description
Communication: On the calculation of time-dependent electron flux within the Born-Oppenheimer approximation: A flux-flux reflection principle: The Journal of Chemical Physics: Vol 147, No 24
%0 Journal Article
%1 albert2017communication
%A Albert, Julian
%A Hader, Kilian
%A Engel, Volker
%B The Journal of Chemical Physics
%D 2017
%I American Institute of Physics
%J The Journal of Chemical Physics
%K ak-engel myown
%N 24
%P 241101
%R 10.1063/1.5011807
%T Communication: On the calculation of time-dependent electron flux within the Born-Oppenheimer approximation: A flux-flux reflection principle
%U https://doi.org/10.1063/1.5011807
%V 147
%X It is commonly assumed that the time-dependent electron flux calculated within the Born-Oppenheimer (BO) approximation vanishes. This is not necessarily true if the flux is directly determined from the continuity equation obeyed by the electron density. This finding is illustrated for a one-dimensional model of coupled electronic-nuclear dynamics. There, the BO flux is in perfect agreement with the one calculated from a solution of the time-dependent Schrödinger equation for the coupled motion. A reflection principle is derived where the nuclear BO flux is mapped onto the electronic flux.
@article{albert2017communication,
abstract = {It is commonly assumed that the time-dependent electron flux calculated within the Born-Oppenheimer (BO) approximation vanishes. This is not necessarily true if the flux is directly determined from the continuity equation obeyed by the electron density. This finding is illustrated for a one-dimensional model of coupled electronic-nuclear dynamics. There, the BO flux is in perfect agreement with the one calculated from a solution of the time-dependent Schrödinger equation for the coupled motion. A reflection principle is derived where the nuclear BO flux is mapped onto the electronic flux.},
added-at = {2018-01-11T09:29:29.000+0100},
author = {Albert, Julian and Hader, Kilian and Engel, Volker},
biburl = {https://www.bibsonomy.org/bibtex/2d9e69c6d012eecdb3df7fdb9390ca098/ak-engel-uniwue},
booktitle = {The Journal of Chemical Physics},
comment = {doi: 10.1063/1.5011807},
description = {Communication: On the calculation of time-dependent electron flux within the Born-Oppenheimer approximation: A flux-flux reflection principle: The Journal of Chemical Physics: Vol 147, No 24},
doi = {10.1063/1.5011807},
interhash = {e6eca802b777140a0ae907410fb60dd2},
intrahash = {d9e69c6d012eecdb3df7fdb9390ca098},
issn = {00219606},
journal = {The Journal of Chemical Physics},
keywords = {ak-engel myown},
month = dec,
number = 24,
pages = 241101,
publisher = {American Institute of Physics},
timestamp = {2018-06-20T14:50:47.000+0200},
title = {Communication: On the calculation of time-dependent electron flux within the Born-Oppenheimer approximation: A flux-flux reflection principle},
url = {https://doi.org/10.1063/1.5011807},
volume = 147,
year = 2017
}