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SUMMARY:Dynamic order-disorder transitions in a system of self-propelled p
 articles - Dr Vladimir Lobaskin (University College Dublin)
DTSTART:20120413T110000Z
DTEND:20120413T120000Z
UID:TALK36902@talks.cam.ac.uk
CONTACT:Dr Mark Miller
DESCRIPTION:We study dynamic self-organisation and order-disorder transiti
 ons in a two-dimensional system of self-propelled particles with aligning 
 interactions. Our model is a variation of the Viscek model\, where alignin
 g interactions arise from group collisions and the particles repel each ot
 her at short distances. We use computer simulations to measure the orienta
 tional order parameter for particle velocities as a function of intensity 
 of internal noise and particle density and\nconstruct a dynamical phase di
 agram for the system. We discuss the analogy between the dynamical orderin
 g and order-disorder transitions in magnetics.
LOCATION:Unilever Lecture Theatre\, Department of Chemistry
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