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Erlangen 2018 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 25: Quantum Gases (Fermions) I

Q 25.6: Talk

Monday, March 5, 2018, 17:30–17:45, K 1.022

Observation of the Higgs mode in the superfluid BEC-BCS crossover in Fermi gases — •Johannes Kombe, Jean-Sébastien Bernier, and Corinna Kollath — Uni Bonn, Nussallee 14-16, 53115 Bonn

Thanks to recent advances, investigating the non-equilibrium dynamics of interacting systems is now possible. Using time-dependent perturbations, one can probe from a different angle the mechanisms responsible for the collective phenomena present in correlated systems. Taking advantage of this progress, we investigate both theoretically and experimentally the evolution of a three-dimensional Fermi gas while the interaction strength is effectively modified. Our study, carried out on the BCS side, reveals various collective excitations. Interestingly, this approach highlights the presence of the Higgs mode.

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