36,628 research outputs found
Ultra High Energy Cosmic Rays
Ultra high energy particles arrive at Earth constantly. They provide a beam
at energies higher than any man-made accelerator, but at a very low rate. Two
large experiments, the Pierre Auger Observatory and the Telescope Array
experiment, have been taking data for several years now covering together the
whole sky. I summarize the most recent measurements from both experiments, I
compare their results and, for a change, I highlight their agreements.Comment: Proceedings of the XXXI PHYSICS IN COLLISION, Vancouver, BC Canada,
August 28 - September 1, 2011; 9 pages with 8 figure
Energy-based model of forming subgroups on finite metric space
Local interactions between particles of a collection causes all particles to reorganize in new positions. The purpose of this paper is to construct an energy-based model of self-organizing subgroups, which describes the behavior of singular local moves of a particle. The present paper extends the Hegselmann-Krause model on consensus dynamics, where agents simultaneously move to the barycenter of all agents in an epsilon neighborhood. The Energy-based model presented here is analyzed and simulated on finite metric space. AMS Subject Classifications:81T80; 93A30; 37M05; 68U2
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