Hydrodynamics of Spatially Ordered Superfluids

Abstract

We derive the hydrodynamic equations for the supersolid and superhexatic phases of a neutral two-dimensional Bose fluid. We find, assuming that the normal part of the fluid is clamped to an underlying substrate, that both phases can sustain third-sound modes and that in the supersolid phase there are additional modes due to the superfluid motion of point defects (vacancies and interstitials).

24 pages of ReVTeX and 7 uuencoded figures. Submitted for publication in Phys. Rev. B

References in corpus (3)

• Supersolids in the Bose-Hubbard Hamiltonian
• Simultaneous Diagonal and Off Diagonal Order in the Bose--Hubbard Hamiltonian
• On the Coexistence of Diagonal and off-Diagonal Long-Range Order, a Monte Carlo Study

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