Bose-Einstein Condensation Temperature of Dipolar Gas in Anisotropic Harmonic Trap
arXiv:cond-mat/0609374 · doi:10.1103/PhysRevA.76.023604
Abstract
We consider a dilute gas of dipole moments in an arbitrary harmonic trap and treat both the short-range, isotropic delta-interaction and the long-range, anisotropic dipole-dipole interaction perturbatively. With this we calculate the leading shift of the critical temperature with respect to that of an ideal gas as a function of the relative orientation of the dipole moments with respect to the harmonic trap axes. In particular, we determine those magic angles, where the dipolar shift of the Bose-Einstein condensation temperature vanishes. Furthermore, we show for the parameters of the ongoing 52Cr-experiment in Stuttgart that this dipolar shift can be enhanced by increasing the number of particles, the geometrical mean trap frequency, and the anisotropy of the trap.
Author information under http://www.theo-phys.uni-essen.de/tp/ags/pelster_dir
References in corpus (10)
- Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
- Bose-Einstein condensation of chromium
- Observation of dipole-dipole interaction in a degenerate quantum gas
- Ultracold heteronuclear molecules in a 3D optical lattice
- Exact hydrodynamics of a trapped dipolar Bose-Einstein condensate
- Dipolar Bose-Einstein condensates with dipole-dependent scattering length
- Expansion dynamics of a dipolar Bose-Einstein condensate
- Non-universal Critical Quantities from Variational Perturbation Theory and Their Application to the BEC Temperature Shift
- Resonant electric dipole-dipole interactions between cold Rydberg atoms in a magnetic field
- Critical Temperature of Weakly Interacting Dipolar Condensates
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- Cold atoms in double-well optical lattices
- Finite-temperature trapped dipolar Bose gas
- Linear Response of a Periodically Driven Thermal Dipolar Gas
- Bright solitons in a quasi-one-dimensional reduced model of a dipolar Bose-Einstein condensate with repulsive short-range interactions
- Dipolar Bose gas with three-body interactions at finite temperature
- Symmetry and Self-Bound Droplets in Dipolar Molecular Gases