******\ We investigate the problem of an infinitely heavy impurity interacting with a dilute Bose gas at zero temperature. When the impurity-boson interactions are short-ranged, we show that boson-boson interactions induce a quantum blockade effect, …

We consider the problem of a fixed impurity coupled to a small number $N$ of noninteracting bosons. We focus on impurity-boson interactions that are mediated by a closed-channel molecule, as is the case for tuneable interatomic interactions in …

We investigate the problem of $N$ identical bosons that are coupled to an impurity particle with infinite mass. For noninteracting bosons, we show that a dynamical impurity-boson interaction, mediated by a closed-channel dimer, can induce an …

We consider the ground-state properties of an impurity particle (“polaron”) resonantly
interacting with a Bose-Einstein condensate (BEC). Focusing on the equal-mass system,
we use a variational wave function for the polaron that goes beyond previous …

We investigate universal properties of a $p$-wave Fermi gas with a resonant
interaction in which the axisymmetry is broken spontaneously or externally. Here, we
show that the short-range correlations can be completely characterized by the …

We investigate universal relations in a spinless Fermi gas near a $p$-wave Feshbach
resonance, and show that the momentum distribution nk has an asymptote proportional to
$k^{−2}$ with the proportionality constant—the $p$-wave contact—scaling with …

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