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Atsushi Horikoshi External source method for Kubo-transformed quantum correlation functions International Journal of Quantum Chemistry 113

Version of Record online: 12 MAR 2012 | DOI: 10.1002/qua.24047

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Kubo-transformed quantum correlation functions are important quantities to characterize dynamical properties of quantum statistical systems. A new method that allows Kubo functions to be calculated by introducing external sources has been recently formulated by Krishna and Voth. This article revisits that external source method, showing that the Krishna-Voth correlation function has a term that grows with time like the so-called secular terms in perturbation theories.

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