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Durham University

Institute of Advanced Study

Past Events

IAS Fellow's Public Lecture - Multidimensional Solitons

1st February 2018, 18:30 to 19:30, Holgate House, Grey College, Professor Boris Malomed (Tel Aviv University)

Abstract

It is commonly known that the interplay of linear and nonlinear effects gives rise to solitons, i.e., self-trapped localized structures, in a wide range of physical settings, including optics, Bose-Einstein condensates (BECs), hydrodynamics, plasmas, condensed-matter physics, etc. Nowadays, solitons are considered as an interdisciplinary class of modes, which feature diverse internal structures.

While most experimental realizations and theoretical models of solitons have been elaborated in one-dimensional (1D) settings, a challenging issue is prediction of stable solitons in 2D and 3D media. In particular, multidimensional solitons may carry an intrinsic topological structure in the form of vorticity. In addition to the "simple" vortex solitons, fascinating objects featuring complex structures, such as hopfions, i.e., vortex rings with internal twist, have been predicted too.

A fundamental problem is propensity of multidimensional solitons to being unstable (naturally, solitons with a more sophisticated structure, such as vortex solitons, are more vulnerable to instabilities). Recently, novel perspectives for the creation of stable 2D and 3D solitons were brought to the attention of researchers in optics and BEC. The present talk aims to provide an overview of the main results and ongoing developments in this vast field. An essential conclusion is the benefit offered by the exchange of concepts between different areas, such as optics, BEC, and hydrodynamics.

Please note the recent time change. This lecture now commences at 6.30pm and not 5.30pm as previously indicated.

This lecture is free and open to all.

Details about Professor Boris Malomed

Directions to Grey College and Holgate House

Map – Grey College is denoted as building No. 8

Contact enquiries.ias@durham.ac.uk for more information about this event.