Professor da Universidade de Tel Aviv profere colóquio "Multidimensional solitons" em Física
Será na próxima sexta-feira (18), às 16h, no auditório do Departamento de Física, no Campus Recife
O Departamento de Física (DF) da Universidade Federal de Pernambuco (UFPE) promove o colóquio “Multidimensional solitons”, com o professor Boris Malomed, da Faculdade de Engenharia da Universidade de Tel Aviv, em Israel. Será na próxima sexta-feira (18), às 16h, no auditório do DF, no Campus Recife.
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.
Departamento de Física