Nonlocal Solitons

Datum

04.10.2010

Zeit

16:30 - 17:30

Sprecher

Wieslaw Krolikowski

Zugehörigkeit

The Australian National University

Serie

MPI-PKS Kolloquium

Sprache

en

Hauptthema

Physik

Andere Themen

Physik

Beschreibung

In spatially nonlocal nonlinear media the nonlinearity in a particular point is determined by wave intensity not only in the same point but also in its neighborhood. Therefore nonlocality tends to average out fast spatial modulation of the wave intensity. This has a profound consequences on wave propagation leading to such effects as collapse arrest and stabilization of multi-dimensional waves as well as supporting formation of higher-order solitons. In this talk I will discuss some of the most relevant nonlinear nonlocal models and the impact of nonlocality on wave dynamics. In particular, I will demonstrate that nonlocality supports formation of complex solitonic structures of different symmetries and enables stable propagation of rotating solitons, so called, azimuthons. I will also discuss the effect of interaction of solitons in nonlocal medium and show that nonlocality provides and effective attractive force acting between solitons leading to the formation of their bound states.

Letztmalig verändert: 01.09.2010, 13:28:45