Dipolar Bose-Einstein condensates with dipole-dependent scattering length

Journal Article · Fri Sep 15 04:00:00 EDT 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.033611· OSTI ID:20857739

Ronen, Shai ^[1]; Bortolotti, Daniele C. E. ^[2]; Blume, D ^[3]; Bohn, John L ^[4]

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1. JILA and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440 (United States)
2. LENS and Dipartimento di Fisica, Universita di Firenze, and INFM, Sesto Fiorentino (Italy)
3. Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164-2814 (United States)
4. JILA, NIST and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440 (United States)

We consider a Bose-Einstein condensate of polar molecules in a harmonic trap, where the effective dipole may be tuned by an external field. We demonstrate that taking into account the dependence of the scattering length on the dipole moment is essential to reproducing the correct energies and for predicting the stability of the condensate. We do this by comparing Gross-Pitaevskii calculations with diffusion Monte Carlo calculations. We find very good agreement between the results obtained by these two approaches once the dipole dependence of the scattering length is taken into account. We also examine the behavior of the condensate in nonisotropic traps.

• OSTI ID: 20857739
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 74; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BOSE-EINSTEIN CONDENSATION
DIFFUSION
DIPOLE MOMENTS
DIPOLES
HARMONIC OSCILLATORS
MOLECULES
MONTE CARLO METHOD
PHASE STABILITY
SCATTERING
SCATTERING LENGTHS
TRAPS