Probing and characterising effective models of far-from-equilibrium universality (A04)

• Subject Area: Optics, Quantum Optics and Physics of Atoms, Molecules and Plasmas
• Term: since 2016
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 273811115

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.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1225: Isolated quantum systems and universality in extreme conditions (ISOQUANT)
• Applicant Institution: Ruprecht-Karls-Universität Heidelberg
• Project Heads: Professor Dr. Thomas Gasenzer; Professor Dr. Markus Kurt Oberthaler