2026/02/02 by Reuben Cook, Au-Chen Lee, P. Blair Blakie · 3 citations
Physics and Astronomy · #cond-mat.quant-gas
paper · pdf · doi:10.1103/32c1-vrbl
published as Phys. Rev. A 113, 063308 (2026) · 13 pages, 5 figures
arxiv created 2026/02/02 · arxiv updated 2026/08/06
We investigate the collective excitations of anisotropic dipolar supersolids in planar confinement, focusing on triangular and stripe phases in situations where the dipoles are titled to have a component in the plane. Using Bogoliubov-de Gennes calculations and hydrodynamic theory, we identify the elastic parameters that govern the long-wavelength dynamics, including two orientational coefficients that capture the broken rotational symmetry induced by dipole tilt. Analytical expressions for the speeds of sound are obtained along the principal axes for triangular supersolids and along any propagation direction for the stripe supersolid. Our results provide a unified framework for understanding sound propagation in anisotropic dipolar supersolids and establish connections to recent experiments on sound propagation in striped Bose-Einstein condensates.