Negative virial coefficients and the dominance of loose packed diagrams for D-dimensional hard spheres
arXiv:cond-mat/0303100 · doi:10.1023/B:JOSS.0000013960.83555.7d
Abstract
We study the virial coefficients B_k of hard spheres in D dimensions by means of Monte-Carlo integration. We find that B_5 is positive in all dimensions but that B_6 is negative for all D >= 6. For 7<=k<=17 we compute sets of Ree-Hoover diagrams and find that either for large D or large k the dominant diagrams are "loose packed". We use these results to study the radius of convergence and the validity of the many approximations used for the equations of state for hard spheres.
26 pages, 69 figures. Some typos corrected. Final version, to appear in the Journal of Statistical Physics
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