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\bibitem{Hannibal_etal2015} {\textquotedblleft}\textit{Quench dynamics of an ultracold Fermi gas in the BCS regime : spectral properties and confinement-induced breakdown of the Higgs mode}{\textquotedblright}. Hannibal S, Kettmann P, Croitoru MD, Vagov A, Axt VM, Kuhn T, Physical review : A : atomic, molecular and optical physics \textbf{91}, 043630 (2015).   http://doi.org/10.1103/PhysRevA.91.043630

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