Volume 78, Number 5, June 2007
|Number of page(s)||6|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||17 May 2007|
Dynamics and thermodynamics of a gas of automata
Dipartimento di Fisica,Università di Bologna - via Irnerio 46, 40126 Bologna, Italy
2 Centro interdipartimentale Galvani - via S. Giacomo 12, 40126 Bologna, Italy
Accepted: 20 April 2007
We consider a system of point charges interacting within a cone of vision and confined by an external potential, as a simple model of individuals provided with vision. The non Newtonian nature of the interaction introduces dissipative effects which are balanced by a memory mechanism. The two-body system is amenable to quadrature, whereas the body system exhibits crystal-like and disordered states with a non-trivial phase diagram if the interaction range and memory persistence are chosen as control parameters.
PACS: 89.75.-k – Complex systems / 87.23.Ge – Dynamics of social systems / 05.10.-a – Computational methods in statistical physics and nonlinear dynamics
© Europhysics Letters Association, 2007
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