Article (Scientific journals)
Revisiting crossed-correlated baths in open quantum systems simulated by HEOM or T-TEDOPA.
Le Dé, Brieuc; Mangaud, Etienne; Chin, Alex W et al.
2026 • In Journal of Chemical Physics, 165 (1)
Peer Reviewed verified by ORBi
 

Files


Full Text
Revisiting_crossed-correlated_baths_in_open_quantu.pdf
Author postprint (2.85 MB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
open quantum systems; conical intersection; Linear vibronic model
Abstract :
[en] Excited-state dynamics of open quantum systems is analyzed by the hierarchical equations of motion (HEOM) or the thermalized time-evolving density operator with orthogonal polynomials algorithm (T-TEDOPA) method when a discrete ab initio linear vibronic model is parameterized by continuous temperature-dependent spectral densities leading to crossed correlation functions, i.e., correlated fluctuations of the energy gap collective modes. We focus on a conical intersection involving two collective modes tuning the energy of each excited state, and we revisit the transformation of the initial correlated tuning baths to de-correlated shared baths in order to reduce the computational resources. While a completely frequency-dependent transformation poses problems for HEOM, we find that in some particular cases, an optimal approximate frequency-independent transformation may be derived. On the contrary, T-TEDOPA is very efficient and allows us to use this frequency-dependent transformation at the price of managing long-range couplings in the tensor chain. An illustrative application is shown by using the linear vibronic coupling model of a planar symmetrical (phenylethynyl)benzene dimer.
Disciplines :
Chemistry
Author, co-author :
Le Dé, Brieuc ;  Institut des Nanosciences de Paris, Sorbonne Université, CNRS, F-75005 Paris, France ; Department of Chemistry and Biochemistry, University of California, Merced, California 95343, USA
Mangaud, Etienne ;  MSME, Université Gustave Eiffel, UPEC, CNRS, F-77454 Marne-La-Vallée, France
Chin, Alex W ;  Institut des Nanosciences de Paris, Sorbonne Université, CNRS, F-75005 Paris, France
Desouter, Michèle  ;  Université de Liège - ULiège > Département de chimie (sciences) ; Institut de Chimie Physique, Université Paris-Saclay-CNRS, UMR8000, F-91400 Orsay, France
Language :
English
Title :
Revisiting crossed-correlated baths in open quantum systems simulated by HEOM or T-TEDOPA.
Publication date :
07 July 2026
Journal title :
Journal of Chemical Physics
ISSN :
0021-9606
eISSN :
1089-7690
Publisher :
AIP Publishing, United States
Volume :
165
Issue :
1
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
ANR - Agence Nationale de la Recherche
Available on ORBi :
since 02 July 2026

Statistics


Number of views
41 (0 by ULiège)
Number of downloads
37 (0 by ULiège)

Scopus citations®
 
0
Scopus citations®
without self-citations
0
OpenAlex citations
 
1

Bibliography


Similar publications



Contact ORBi