Size-consistent Brillouin-Wigner perturbation theory with an exponentially parametrized wave function: Brillouin-Wigner coupled-cluster theory.

Size-consistent Brillouin-Wigner perturbation theory with an exponentially parametrized wave function: Brillouin-Wigner coupled-cluster theory.
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DOI：
10.1103/physreva.50.4558
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发表时间：
1994-12
期刊：
Physical review. A, Atomic, molecular, and optical physics
影响因子：
--
通讯作者：
I. Hubač;Pavel Neogrády
I. Hubač;Pavel Neogrády
中科院分区：
其他
文献类型：
--
作者：
I. Hubač;Pavel Neogrády

文献摘要

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利用Lippmann-Schwinger方程和波函数的指数近似，研究了Brillouin-Wigner微扰理论的尺度一致性。研究了该理论与耦合集团方法的关系，并通过有效哈密顿方法进行了比较。
Size consistency of the Brillouin-Wigner perturbation theory is studied using the Lippmann-Schwinger equation and an exponential ansatz for the wave function. Relation of this theory to the coupled cluster method is studied and a comparison through the effective Hamiltonian method is also provided.