Connectivity of Growing Random Networks

Details Connectivity of Growing Random Networks Connectivity of Growing Random Networks

2000-05-08

arxiv.org/abs/cond-mat/0005139v2

Phys. Rev. Lett. 85, 4629-4632 (2000).

Physics

Condensed Matter

Statistical Mechanics

4 pages, 2 figures, 2 column revtex format final version to appear in PRL; contains additional results

Scientific paper

10.1103/PhysRevLett.85.4629

A solution for the time- and age-dependent connectivity distribution of a growing random network is presented. The network is built by adding sites which link to earlier sites with a probability A_k which depends on the number of pre-existing links k to that site. For homogeneous connection kernels, A_k ~ k^gamma, different behaviors arise for gamma<1, gamma>1, and gamma=1. For gamma<1, the number of sites with k links, N_k, varies as stretched exponential. For gamma>1, a single site connects to nearly all other sites. In the borderline case A_k ~ k, the power law N_k ~k^{-nu} is found, where the exponent nu can be tuned to any value in the range 2

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