Note on the Cluster Expansion Theory of Classical Fluids : Watermelon Approximation
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概要
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The irreducible clusters appearing in the cluster expansion theory of fluids are classified according to the number of the branch points, to which three or more bonds are connected. All the terms arising from the irreducible clusters with two and only two branch points are summed up and the contribution of these terms to the free energy is obtained exactly in a simple closed form. This enables us to improve the results of calculation of the thermodynamic functions based on Montroll and Mayer's method, in which only clusters without branch point are taken into consideration. This kind of summation procedure seems to be necessary to avoid the divergence difficulty in the case of Coulomb interaction between particles in quantum mechanical systems as well as in classical systems.
- 社団法人日本物理学会の論文
- 1959-01-05
著者
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Abe Ryuzo
Department Of Emergency And Critical Care Medicine Chiba University Graduate School Of Medicine
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Abe Ryuzo
Department Of Physics Tokyo Institute Of Technology
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