The inhomogeneity in vortex density in a highly inhomogeneous rotating superfluid was investigated. The vortex lattice inhomogeneity was found to be driven by the discrete way vortices imparting angular momentum to the superfluid. This effect was found to favor the highest vortex density in regions where the superfluid density is most uniform. The results show that the boson velocity deviates from a rigid-body form exhibiting a radial-shear flow past the vortex lattice.
Publication Source (Journal or Book title)
Physical Review A - Atomic, Molecular, and Optical Physics
Sheehy, D., & Radzihovsky, L. (2004). Vortex lattice inhomogeneity in spatially inhomogeneous superfluids. Physical Review A - Atomic, Molecular, and Optical Physics, 70 (5 A) https://doi.org/10.1103/PhysRevA.70.051602