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11 papers · 1 filter
Radial quadrupole and scissors modes in trapped Fermi gases across the BCS phase transition
Michael Urban
The excitation spectra of the radial quadrupole and scissors modes of ultracold Fermi gases in elongated traps are studied across the BCS superfluid-normal phase transition in the…
Pair-Breaking in Rotating Fermi Gases
Michael Urban, Peter Schuck
We study the pair-breaking effect of rotation on a cold Fermi gas in the BCS-BEC crossover region. In the framework of BCS theory, which is supposed to be qualitatively correct at…
Coherence and Correlations in Atom Lasers
P. D. Drummond, T. Vaughan, J. F. Corney +2
We review and characterize the quantum coherence measures that are most useful for quantum gases, including Bose-Einstein condensates (BEC) and ultra-cold fermions, and outline how…
Collective excitations of trapped one-dimensional dipolar quantum gases
P. Pedri, S. De Palo, E. Orignac +2
We calculate the excitation modes of a 1D dipolar quantum gas confined in a harmonic trap with frequency and predict how the frequency of the breathing n=2 mode characterizes…
Anderson Localization of Bogolyubov Quasiparticles in Interacting Bose-Einstein Condensates
Pierre Lugan, David Clément, Philippe Bouyer +2
We study the Anderson localization of Bogolyubov quasiparticles in an interacting Bose-Einstein condensate (with healing length ξ) subjected to a random potential (with finite corr…
Layer-resolved imaging of domain wall interactions in magnetic tunnel junction-like trilayers
Jan Vogel, Salia Cherifi, Stefania Pizzini +5
We have performed a layer-resolved, microscopic study of interactions between domain walls in two magnetic layers separated by a non-magnetic one, using high-resolution x-ray photo…