题    目：Vortex dynamics in Schrödinger equation with competing nonlinearities

主讲人：Angel Paredes 教授

单    位：西班牙维戈大学

时    间：2025年5月14日 17:00

ZOOM：713 668 5659

密    码： 123456

摘    要：After a brief review on solitons and vortices in the nonlinear Schrödinger equation, I will discuss the peculiarities of the case with competing nonlinear terms, in two dimensions. This model describes physical systems such as liquid light and quantum droplets in Bose-Einstein condensed cold atomic mixtures. I will present effective models that allow for a simple yet accurate description of flat-top eigenstates for a large norm of the wavefunction. I will discuss the stability of bright vortex solitons and show the existence and dynamics of different configurations and processes in this context: vortex crystals, rarefaction pulses, coherent cavitation, vortex trajectories, etc.

简    介： Prof. Angel Paredes is an expert on vortices and holographic QCD. Paredes obtained his PhD from Santiago de Compostela University, Spain, in 2004, has been a postdoc at Ecole Polytechnique, Paris, France, in Utrecht University, Netherlands, in Barcelona University, Spain, before becoming a tenured professor in 2019 in Vigo University, Spain. Paredes has published over 40 papers in JHEP, Phys.Rev.A, Phys.Rev.D, Phys.Rev.E, Nucl.Phys.B, J.Phys.A, with over 2400 citations.