Tejero and Cuesta hard disk equation of state

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The Tejero and Cuesta hard disk equation of state is given by (Ref. 1 Eq. 3.10)

Z (\eta)= \frac{1+\sum_{n=1}^6 C_n \eta^n}{(1-\eta)^2}

where

C1 0
C2 0.128018
C3 0.0018188
C4 -0.72553
C5 2.52783
C6 -2.4945

η is the packing fraction and Z is the compressibility factor.

[edit] References

  1. C. F. Tejero and J. A. Cuesta "Hard-sphere and hard-disk freezing from the differential formulation of the generalized effective liquid approximation", Physical Review E 47 pp. 490-495 (1993)
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