Exclusion volumes of convex bodies in high space dimensions: applications to virial coefficients and continuum percolation
Exclusion volumes of convex bodies in high space dimensions: applications to virial coefficients and continuum percolation
复制标题
高空间维度中凸体的排除体积:在维里系数和连续介质渗滤中的应用
DOI:
10.1088/1742-5468/ac8c8b
复制
发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Jiao, Yang
中科院分区:
文献类型:
--
作者:
Torquato, Salvatore;Jiao, Yang
Using the concepts of mixed volumes and quermassintegrals of convex geometry, we derive an exact formula for the exclusion volume v ex (K) for a general convex body K that applies in any space dimension. While our main interests concern the rotationally-averaged exclusion volume of a convex body with respect to another convex body, we also describe some results for the exclusion volumes for convex bodies with the same orientation. We show that the sphere minimizes the dimensionless exclusion volume v ex (K)/v (K) among all convex bodies, whether randomly oriented or uniformly oriented, for any d, where v (K) is the volume of K. When the bodies have the same orientation, the simplex maximizes the dimensionless exclusion volume for any d with a large-d asymptotic scaling behavior of 2 2d/d 3/2, which is to be contrasted with the corresponding scaling of 2 d for the sphere. We present explicit formulas for quermassintegrals W 0 (K),..., W d (K) for many different nonspherical convex bodies, including cubes, parallelepipeds, regular simplices, cross-polytopes, cylinders, spherocylinders, ellipsoids as well as lower-dimensional bodies, such as hyperplates and line segments. These results are utilized to determine the rotationally-averaged exclusion volume v ex (K) for these convex-body shapes for dimensions 2 through 12. While the sphere is the shape possessing the minimal dimensionless exclusion volume, we show that, among the convex bodies considered that are sufficiently compact, the simplex possesses the maximal v ex (K)/v (K) with a scaling behavior of 2 1.6618... d. Subsequently, we apply these results to determine the corresponding second virial coefficient B 2 (K) of the aforementioned hard hyperparticles. Our results are also applied to compute estimates of the continuum percolation threshold η c derived previously by the authors for systems of identical overlapping convex bodies. We conjecture that overlapping spheres possess the maximal value of η c among all identical nonzero-volume convex overlapping bodies for d⩾ 2, randomly or uniformly oriented, and that, among all identical, oriented nonzero-volume convex bodies, overlapping simplices have the minimal value of η c for d⩾ 2.
登录
查看更多内容
影响因子:
--
作者:
D. Zaporozhets;Z. Kabluchko
通讯作者:
Z. Kabluchko
DOI:
--
发表时间:
2020
期刊:
影响因子:
--
作者:
D. Hug;W. Weil
通讯作者:
W. Weil
DOI:
10.1088/1742-5468/2011/10/p10017
发表时间:
2011
期刊:
Journal of Statistical Mechanics: Theory and Experiment
影响因子:
--
作者:
Chase E. Zachary;Salvatore Torquato
通讯作者:
Salvatore Torquato
影响因子:
0.5
作者:
S. Torquato;F. Stillinger
通讯作者:
F. Stillinger
DOI:
--
发表时间:
1991
期刊:
影响因子:
--
作者:
G. Tarjus;P. Viot;S. Ricci;J. Talbot
通讯作者:
J. Talbot