Speaker
Description
The non-equilibrium dynamics of quantum spin chains is significantly influenced by confining forces, as was demonstrated using the Ising quantum spin chain in a longitudinal magnetic field. Depending on the setup, they can suppress thermalisation either through real-time confinement, analogous to strong interactions, or via Wannier-Stark localisation caused by Bloch oscillations. Both mechanisms limit the light-cone spreading of correlations and restrict the growth of entanglement entropy. Furthermore, Bloch oscillations interfere with the decay of a false vacuum by hindering the expansion of nucleated true vacuum bubbles. We recently extended these investigations to the 3-state Potts quantum spin chain, which shows richer behaviour due to baryonic excitations and various possible alignments between the initial magnetisation and the applied longitudinal field. The latter lead to novel features such as partial localisation in certain quench scenarios, for which some correlations still spread unsuppressed.
