Anisotropic sound and shock waves in dipolar Bose-Einstein condensate
arXiv:1111.5250 · doi:10.1016/j.physleta.2011.11.054
Abstract
We study the propagation of anisotropic sound and shock waves in dipolar Bose-Einstein condensate in three dimensions (3D) as well as in quasi-two (2D, disk shape) and quasi-one (1D, cigar shape) dimensions using the mean-field approach. In 3D, the propagation of sound and shock waves are distinct in directions parallel and perpendicular to dipole axis with the appearance of instability above a critical value corresponding to attraction. Similar instability appears in 1D and not in 2D. The numerical anisotropic Mach angle agrees with theoretical prediction. The numerical sound velocity in all cases agrees with that calculated from Bogoliubov theory. A movie of the anisotropic wave propagation in a dipolar condensate is made available as supplementary material.
5 pages, 3 figures
References in corpus (17)
- A Strongly Dipolar Bose-Einstein Condensate of Dysprosium
- Strong dipolar effects in a quantum ferrofluid
- Observation of dipole-dipole interaction in a degenerate quantum gas
- Stabilizing a purely dipolar quantum gas against collapse
- d-wave collapse and explosion of a dipolar Bose-Einstein condensate
- Emergence of turbulence in an oscillating Bose-Einstein condensate
- Anisotropic solitons in dipolar Bose-Einstein Condensates
- Stability of quasi-two-dimensional Bose-Einstein condensates with dominant dipole-dipole interactions
- Dipolar gases in quasi one-dimensional geometries
- Exact hydrodynamics of a trapped dipolar Bose-Einstein condensate
- Comparing contact and dipolar interaction in a Bose-Einstein condensate
- Dysprosium magneto-optical traps
- Vortices in dipolar condensates with dominant dipolar interactions
- Wave patterns generated by a supersonic moving body in a binary Bose-Einstein condensate
- Linear "ship waves" generated in stationary flow of a Bose-Einstein condensate past an obstacle
- Numerical and variational solutions of the dipolar Gross-Pitaevskii equation in reduced dimensions
- Supersonic and subsonic shock waves in the unitary Fermi gas
Cited by in corpus (14)
- Anisotropic excitation spectrum of a dipolar quantum Bose gas
- Polarons in a Dipolar Condensate
- Dipolar Bose-Einstein condensate in a ring or in a shell
- Mixing, demixing, and structure formation in a binary dipolar Bose-Einstein condensate
- Two-dimensional Bose gas of tilted dipoles: roton instability and condensate depletion
- Self trapping of a dipolar Bose-Einstein condensate in a double well
- Dynamics of the corotating vortices in dipolar Bose-Einstein condensates in the presence of dissipation
- A dipolar droplet bound in a trapped Bose-Einstein condensate
- Anisotropic superfluidity of two-dimensional excitons in a periodic potential
- Stability and collapse of fermions in a binary dipolar boson-fermion 164Dy-161Dy mixture
- Dynamics of shock waves in a superfluid unitary Fermi gas
- Dipolar Bose-Einstein condensate for large scattering length
- Study of a degenerate dipolar Fermi gas of 161Dy atoms
- Anisotropic merging and splitting of dipolar Bose-Einstein condensates