A scheme that proves the superfluidity of a layer helium-4 on graphite holds promise for demonstrating may also be supersolid.

Cavity QED experiments are natural hosts for non-equilibrium phases of matter supported by photon-mediated interactions. In this work, we consider a cavity simulation the BCS model superfluidity, studying regimes where photons act as dynamical degrees freedom instead mere mediators interaction via virtual processes. We find an enhancement long time coherence following quench whenever frequency ...

The theory of superfluidity was developed by Landau and Bogolyubov (cf. [10, 11, 14]), for an introduction see [12]. An analogue of the approach of [10, 11] was applied to superconductivity theory (cf. [13]). The essence of the superfluidity phenomenon is that the Bose condensate becomes superfluid and friction between condensate and normal phase disappears. Bogolyubov in [10, 11] found that th...

We investigate strong-coupling superfluidity in a uniform two-component gas of ultra-cold Fermi atoms attractively interacting via quasi-molecular bosons associated with a Feshbach resonance. This interaction is tunable by the threshold energy 2ν of the Feshbach resonance, becoming large as 2ν is decreased (relative to 2εF, where εF is the Fermi energy of one component.). In recent work, we sho...