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Prog. Theor. Phys. Vol. 71 No. 5 (1984) pp. 894-905

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Momentum Distribution Condition in the Cluster Variation Method

Hiroshi Mimura and Masami Yamada*

Chiyoda Institute of Technology, Shitaya-1, Taito-ku, Tokyo 110
*Science and Engineering Research Laboratory, Waseda University, Tokyo 160

(Received December 26, 1983)

Abstract:

The distribution function of the particle occupation probability in the momentum space is investigated by the cluster variation method. The distribution function calculated in the two-body cluster approximation often gives unreasonably too many particles jumping out of the degenerate state. A new condition is introduced to suppress the excitation of too many particles. The condition is applied to liquid helium-4 and neutron matter. Numerical results show that the condition regulates the behavior of the momentum distribution function, and is useful to avoid an unnatural kinetic energy.


URL : http://ptp.ipap.jp/link?PTP/71/894/
DOI : 10.1143/PTP.71.894

[ Full Text PDF : FREE ACCESS (623K) ] Citation:

References:

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  2. For example, V. R. Pandharipande and R. B. Wiringa, Rev. Mod. Phys. 51 (1979), 821[APS].
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    See also:
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Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 91 No. 6 (1994) pp. 1149-1172 :
    A Variational Method for Infinite Fermion Systems with Central Forces
    Masatoshi Takano and Masami Yamada

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