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Measuring topology by dynamics: Chern number from linking number
Matthias Tarnowski, F. Nur Ünal, Nick Fläschner +4
Integer-valued topological indices, characterizing nonlocal properties of quantum states of matter, are known to directly predict robust physical properties of equilibrium systems.…
Spectral properties and breathing dynamics of a few-body Bose-Bose mixture in a 1D harmonic trap
Maxim Pyzh, Sven Krönke, Christof Weitenberg +1
We investigate a few-body mixture of two bosonic components, each consisting of two particles confined in a quasi one-dimensional harmonic trap. By means of exact diagonalization w…
Driving protocol for a Floquet topological phase without static counterpart
A. Quelle, C. Weitenberg, K. Sengstock +1
Periodically driven systems play a prominent role in optical lattices. In these ultracold atomic systems, driving is used to create a variety of interesting behaviours, of which an…
Implementing supersymmetric dynamics in ultracold atom systems
M. Lahrz, C. Weitenberg, L. Mathey
Supersymmetric systems derive their properties from conserved supercharges which form a supersymmetric algebra. These systems naturally factorize into two subsystems, which, when c…
Superfluidity and relaxation dynamics of a laser-stirred 2D Bose gas
Vijay Pal Singh, Christof Weitenberg, Jean Dalibard +1
We investigate the superfluid behavior of a two-dimensional (2D) Bose gas of Rb atoms using classical field dynamics. In the experiment by R. Desbuquois \textit{et al.}, Nat…
Observation of topological Bloch-state defects and their merging transition
Matthias Tarnowski, Marlon Nuske, Nick Fläschner +6
Topological defects in Bloch bands, such as Dirac points in graphene, and their resulting Berry phases play an important role for the electronic dynamics in solid state crystals. S…