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Topological Dynamics in Physics and Biology

Optical vortex knots in nonlinear self-trapped waves

speaker: Anton Desyatnikov (Nonlinear Physics Centre, RSPE, The Australian National University)

abstract: We demonstrate, in numerical simulations of the nonlinear Schroedinger equation, the spontaneous formation of vortex spirals, links, and knots in the field of a perturbed optical spatial soliton. The analysis based on internal modes of solitons in the medium with Kerr-type saturable nonlinearity shows that proper superposition of the monople and quadrupole modes is responsible for wave knotting.

timetable:
Tue 12 Jul, 17:00 - 18:00, Sala Conferenze Centro De Giorgi
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