Connected moments expansion: A new tool for quantum many-body theory.
作者： J. Cioslowski
DOI: 10.1103/PHYSREVLETT.58.83
关键词:
摘要: The connected-moments expansion (CMX) for the ground-state energy is derived from Horn-Weinstein theorem. This new technique possesses several striking advantages over traditional approaches to calculation of energy. Like perturbational theories, CMX series conceptually simple but easier derive and program usually convergent even very ``crude'' trial kets. Numerical examples reveal potential applicability correlation when ket has form multideterminant wave function.
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