Universal Dynamics at the Lowest Temperatures

Abstract:

High-performance graphical processing units (GPU) are used for the repeated parallelised
propagation of non-linear partial differential equations on large spatio-temporal grids. The main
challenge results as a combination of the requirement of large grids for exploring scaling over
several orders of magnitude, both in space and time, and the need for high statistics in
averaging over many runs, in computing correlation functions for highly fluctuating quantum
many-body states. With our simulations, we explore the dynamics of complex quantum
systems far from equilibrium, with the aim of classifying their universal characteristics such as
scaling exponents near non-thermal fixed points. Our results are strongly relevant for
the development of synthetic quantum systems when exploring the respective physics in the
laboratory.

I. Siovitz, P. Heinen, N. Rasch, S. Lannig, Y. Deller, H. Strobel, M. Oberthaler, T. Gasenzer,
„Universal Dynamics at the Lowest Temperatures“, Proc. 8th bwHPC Sympos. 2022, 51 (2022).

https://elib.uni-stuttgart.de/items/b4ae0d25-14e1-4ce9-aca2-1e9cbb31cb81

Related to Project A04