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25 papers · 1 filter
Low-temperature orientational order and possible domain structures in C(_{60}) fullerite
Vadim M. Loktev, Yuri G. Pogorelov, Julia N. Khalak
Based on a simple model for ordering of hexagons on square planar lattice, an attempt has been made to consider possible structure of C(_{60}) fullerite in its low temperature phas…
Topology of U(2,1) representation spaces
Peter B. Gothen
The Betti numbers of moduli spaces of representations of a universal central extension of a surface group in the groups U(2,1) and SU(2,1) are calculated. The results are obtained…
Scaling properties of scale-free evolving networks: Continuous approach
S. N. Dorogovtsev, J. F. F. Mendes
Scaling behavior of scale-free evolving networks arising in communications, citations, collaborations, etc. areas is studied. We derive universal scaling relations describing prope…
Generic scale of the "scale-free" growing networks
S. N. Dorogovtsev, J. F. F. Mendes, A. N. Samukhin
We show that the connectivity distributions of scale-free growing networks ( is the network size) have the generic scale -- the cut-off at . The scali…
Growing network with heritable connectivity of nodes
S. N. Dorogovtsev, J. F. F. Mendes, A. N. Samukhin
We propose a model of a growing network, in which preferential linking is combined with partial inheritance of connectivity (number of incoming links) of individual nodes by new on…
Cosmic strings in axionic-dilatonic gravity
Caroline Santos
We first consider local cosmic strings in dilaton-axion gravity and show that they are singular solutions. Then we take a supermassive Higgs limit and present expressions for the f…