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Numerical Feynman integrals for density operator dynamics using more than one mesh: faster convergence and significant reduction of computational cost
Feynman integral path integral QUAPI Feynman-Vernon
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2010/10/26
The Feynman integral is one of the most accurate methods for calculating density operator dy-
namics in open quantum systems. However, the number of time steps that can realistically be used is alway...
Invariant Hermitian Operator and Density Operator for the
Adiabatically Time-Dependent System
invariant Hermitian operator density operator adiabatically
time-dependent system Heisenberg spin system
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2007/8/15
2001Vol.36No.3pp.263-266DOI:
Invariant Hermitian Operator and Density Operator for the
Adiabatically Time-Dependent System
YAN Feng-Li and YANG Lin-Guang
Department of P...