2007/04/30 by Daw-Wei Wang
Physics and Astronomy · #Anisotropy #Chemical polarity #Classical mechanics #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Coulomb #Dipole #Hamiltonian (control theory) #Perpendicular #Phonon #Physics #Polar #Quantum electrodynamics #Quantum mechanics #Quantum, superfluid, helium dynamics #Resonance (particle physics) #Strong Light-Matter Interactions #cond-mat.other #cond-mat.supr-con
paper · pdf · doi:10.1088/1367-2630/10/5/053005
published as New J. Phys. 10 (2008) 053005 · Same as published version (11 pages, 2 figure)
openalex publication_date 2008/05/07 · arxiv created 2008/05/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We derive a general, effective many-body theory for bosonic polar molecules in the strong interaction regime, which cannot be correctly described by previous theories within the first Born approximation. The effective Hamiltonian has additional interaction terms, which surprisingly reduce the anisotropic features of the condensate profile near the shape resonance regime. In a two-dimensional (2D) system with the dipole moment perpendicular to the plane, we find that the phonon dispersion scales as in the low-momentum ( p ) limit, showing the same low energy properties as a 2D charged Bose gas with Coulomb (1/ r ) interactions.