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Statistics and dynamics in an optical vortex
BY - Yael Roichman, School of Chemistry, TAU


Abstract:

When two identical particles are driven along a straight line by an identical force there are no attractions forces between them. Surprisingly, when the same two particles are driven along a ring of light, with identical force, they attract and form a pair. The pairing mechanism is a pure non-equilibrium phenomenon and is a result of symmetry breaking due to the path’s curvature. We use experiment, simulation and theory to demonstrate and explain this effect. We show that dynamic limit-cycles and structure emerge due to this pseudo-potential in many particle systems,
and demonstrate how they depend on temperature and trapping stiffness.
The event will take place on the 11/01/2012 from 12:00
The event will take place in IKI Auditorium, Building 51, room 015
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