We extend our previous study of absorption line shapes of molecular aggregates using the Liouville space hierarchical equations of motion (HEOM) method [L. P. Chen, R. H. Zheng, Q. Shi, and Y. J. Yan, J. Chem. Phys. 131, 094502 (2009)] to calculate third order optical response functions and two-dimensional electronic spectra of model dimers. As in our previous work, we have focused on the applicability of several approximate methods related to the HEOM method. We show that while the second order perturbative quantum master equations are generally inaccurate in describing the peak shapes and solvation dynamics, they can give reasonable peak amplitude evolution even in the intermediate coupling regime. The stochastic Liouville equation results in good peak shapes, but does not properly describe the excited state dynamics due to the lack of detailed balance. A modified version of the high temperature approximation to the HEOM gives the best agreement with the exact result.
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14 January 2010
Research Article|
January 14 2010
Two-dimensional electronic spectra from the hierarchical equations of motion method: Application to model dimers
Liping Chen;
Liping Chen
1Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry,
Chinese Academy of Sciences
, Zhongguancun, Beijing 100190, China
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Renhui Zheng;
Renhui Zheng
1Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry,
Chinese Academy of Sciences
, Zhongguancun, Beijing 100190, China
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Qiang Shi;
Qiang Shi
a)
1Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry,
Chinese Academy of Sciences
, Zhongguancun, Beijing 100190, China
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YiJing Yan
YiJing Yan
2Department of Chemistry,
Hong Kong University of Science and Technology
, Kowloon, Hong Kong SAR, China
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a)
Electronic mail: [email protected].
J. Chem. Phys. 132, 024505 (2010)
Article history
Received:
November 30 2009
Accepted:
December 23 2009
Citation
Liping Chen, Renhui Zheng, Qiang Shi, YiJing Yan; Two-dimensional electronic spectra from the hierarchical equations of motion method: Application to model dimers. J. Chem. Phys. 14 January 2010; 132 (2): 024505. https://doi.org/10.1063/1.3293039
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