Article (Scientific journals)
Statistical distributions of the tuning and coupling collective modes at a conical intersection using the hierarchical equations of motion
Mangaud, Etienne; Lasorne, Benjamin; Atabek, Osman et al.
2019In Journal of Chemical Physics
Peer Reviewed verified by ORBi
 

Files


Full Text
JCP_IC_19.pdf
Publisher postprint (10.41 MB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
conical intersection; dissipative dynamics; HEOM
Abstract :
[en] We investigate the possibility of extracting the probability distribution of the effective environmental tuning and coupling modes during the nonadiabatic relaxation through a conical intersection. Dynamics are dealt with an open quantum system master equation by partitioning a multistate electronic subsystem out of all the nuclear vibrators. This is an alternative to the more usual partition retaining the tuning and coupling modes of a conical intersection in the active subsystem coupled to a residual bath. The minimal partition of the electronic system generally leads to highly structured spectral densities for both vibrational baths and requires a strongly nonperturbative non-Markovian master equation, treated here by the hierarchical equations of motion (HEOMs). We extend—for a two-bath situation—the procedure proposed by Shi et al. [J. Chem. Phys. 140, 134106 (2014)], whereby the information contained in the auxiliary HEOM matrices is exploited in order to derive the nuclear dissipative wave packet, i.e., the statistical distribution of the displacement of the two tuning and coupling collective coordinates in each electronic state and the coherence. This allows us to visualize the distribution, all along the nonadiabatic decay. We explore a large parameter space for a symmetrical conical intersection model and a symmetrical initial Franck-Condon preparation. Some parameters could be controlled by external fields, while others are molecule dependent and could be designed by molecular engineering. We illustrate the relation between the strongly coupled electronic and bath dynamics together with a geometric measure of non-Markovianity.
Disciplines :
Chemistry
Author, co-author :
Mangaud, Etienne
Lasorne, Benjamin
Atabek, Osman
Desouter-Lecomte, Michèle ;  Université de Liège - ULiège > Département de chimie (sciences) > Département de chimie (sciences)
Language :
English
Title :
Statistical distributions of the tuning and coupling collective modes at a conical intersection using the hierarchical equations of motion
Publication date :
2019
Journal title :
Journal of Chemical Physics
ISSN :
0021-9606
eISSN :
1089-7690
Publisher :
American Institute of Physics, United States - New York
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 23 December 2019

Statistics


Number of views
52 (6 by ULiège)
Number of downloads
2 (2 by ULiège)

Scopus citations®
 
10
Scopus citations®
without self-citations
5
OpenCitations
 
6

Bibliography


Similar publications



Contact ORBi