Affiliation:
1. Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
Abstract
In this Communication, we propose the time-domain Prony fitting decomposition ( t-PFD) as an accurate and efficient exponential series method, applicable to arbitrary bath correlation functions. The resulting numerical efficiency of hierarchical equations of motion (HEOM) formalism is greatly optimized, especially in low temperature regimes that would be inaccessible with other methods. For demonstration, we calibrate the present t-PFD against the celebrated Padé spectrum decomposition method, followed by converged HEOM evaluations on the single-impurity Anderson model system.
Funder
Anhui Initiative in Quantum Information Technologies
Ministry of Science and Technology of the People’s Republic of China
National Natural Science Foundation of China
GHfund B
Subject
Physical and Theoretical Chemistry,General Physics and Astronomy
Cited by
31 articles.
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