期刊
JOURNAL OF CHEMICAL PHYSICS
卷 121, 期 11, 页码 5143-5147出版社
AMER INST PHYSICS
DOI: 10.1063/1.1783151
关键词
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We show that a small perturbation periodic in imaginary time can be used to compute expectation values of nondifferential operators that do not commute with the Hamiltonian within the framework of quantum diffusion Monte Carlo. Some results for the harmonic oscillator and the helium atom are presented showing the validity of the proposed method. (C) 2004 American Institute of Physics.
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