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| The '''Ballone-Pastore-Galli-Gazillo''' (BPGG) (1986) (Eq. 3.8 Ref. 1) [[Closure relations | closure relation]], | | The '''Ballone-Pastore-Galli-Gazzillo (BPGG)''' (Eq. 3.8 Ref. 1) closure relation, developed for hard sphere mixtures, is given by |
| developed for [[Hard-sphere mixtures | mixtures of hard spheres]], is given by | |
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| :<math>B(r)=\left[ 1+s\gamma \left( r\right) \right] ^{1/s}-1-\gamma \left(r\right) </math>
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| where <math>s=15/8</math>.
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| It has its origins in the [[Martynov Sarkisov | Martynov-Sarkisov]] closure (<math>s=2</math>).
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| The value of <math>s</math> can be determined by a self-consistency condition.
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| Notice that for <math>s=1</math> the BPGG approximation reduces to the [[HNC| hyper-netted chain]] closure.
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| ==References==
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| #[http://dx.doi.org/10.1080/00268978600102071 P. Ballone; G. Pastore; G. Galli; D. Gazzillo "Additive and non-additive hard sphere mixtures" Molecular Physics, '''59''' pp. 275-290 (1986)]
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| [[Category: Integral equations]]
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