Analytical calculation of neighborhood order probabilities for high dimensional Poissonic processes and mean field models

Tercariol, Cesar Augusto Sangaletti; Kiipper, Felipe de Mouta; Martinez, Alexandre Souto

Analytical calculation of neighborhood order probabilities for high dimensional Poissonic processes and mean field models

Authors

Tercariol, Cesar Augusto Sangaletti

Kiipper, Felipe de Mouta

Martinez, Alexandre Souto

Description

Consider that the coordinates of $N$ points are randomly generated along the edges of a $d$-dimensional hypercube (random point problem). The probability that an arbitrary point is the $m$th nearest neighbor to its own $n$th nearest neighbor (Cox probabilities) plays an important role in spatial statistics. Also, it has been useful in the description of physical processes in disordered media. Here we propose a simpler derivation of Cox probabilities, where we stress the role played by the system dimensionality $d$. In the limit $d \to \infty$, the distances between pair of points become indenpendent (random link model) and closed analytical forms for the neighborhood probabilities are obtained both for the thermodynamic limit and finite-size system. Breaking the distance symmetry constraint drives us to the random map model, for which the Cox probabilities are obtained for two cases: whether a point is its own nearest neighbor or not.
12 pages, 3 figures and 1 table