Description

This project experimentally and theoretically centres on the universal dynamics of quantum many-body systems far from equilibrium which is characterized by strongly nonlinear excitations, including rogue waves generated by caustics, as well as vortex ensembles. Non-thermal fixed points, serving as formalization of universally slowed-down, self-similar time evolution, are examined through experiments involving rubidium and potassium Bose gases. The project seeks to establish the sine-Gordon-type model as an effective framework for describing such dynamics in 1D spinor and 2D single-component condensates. A primary objective is to unveil universality classes, particularly those associated with anomalously slow, subdiffusive spatial coarsening evolution.