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20 papers · 2 filters
Spectral flow of trimer states of two heavy impurities and one light condensed boson
N. T. Zinner
The spectral flow of three-body (trimer) states consisting of two heavy (impurity) particles sitting in a condensate of light bosons is considered. Assuming that the condensate is…
Borromean ground state of fermions in two dimensions
A. G. Volosniev, D. V. Fedorov, A. S. Jensen +1
The study of quantum mechanical bound states is as old as quantum theory itself. Yet, it took many years to realize that three-body borromean systems that are bound when any two-bo…
Mean-field yrast spectrum and persistent currents in a two-component Bose gas with interaction asymmetry
Z. Wu, E. Zaremba, J. Smyrnakis +3
We analyze the mean-field yrast spectrum of a two-component Bose gas in the ring geometry with arbitrary interaction asymmetry. Of particular interest is the possibility that the y…
Observation of a Strong Atom-Dimer Attraction in a Mass-Imbalanced Fermi-Fermi Mixture
Michael Jag, Matteo Zaccanti, Marko Cetina +5
We investigate a mixture of ultracold fermionic K atoms and weakly bound LiK dimers on the repulsive side of a heteronuclear atomic Feshbach resonance. By radio…
Fractional energy states of strongly-interacting bosons in one dimension
N. T. Zinner, A. G. Volosniev, D. V. Fedorov +2
We study two-component bosonic systems with strong inter-species and vanishing intra-species interactions. A new class of exact eigenstates is found with energies that are {\it not…
Pair Correlations in the Two-Dimensional Fermi Gas
V. Ngampruetikorn, J. Levinsen, Meera M. Parish
We consider the two-dimensional Fermi gas at finite temperature with attractive short-range interactions. Using the virial expansion, which provides a controlled approach at high t…