TY - JOUR
AU - D. Bortolotti
AU - Shai Ronen
AU - John Bohn
AU - D. Blume
AB - We predict a new kind of instability in a Bose-Einstein condensate composed of dipolar particles. Namely, a comparatively weak dipole moment can produce a large, negative two-body scattering length that can collapse the Bose-Einstein condensate. To verify this effect, we validate mean-field solutions to this problem using exact, diffusion Monte Carlo methods. We show that the diffusion Monte Carlo energies are reproduced accurately within a mean-field framework if the variation of the
s
-wave scattering length with the dipole strength is accounted for properly.
BT - Physical Review Letters
DA - 2006-10
DO - 10.1103/PhysRevLett.97.160402
N2 - We predict a new kind of instability in a Bose-Einstein condensate composed of dipolar particles. Namely, a comparatively weak dipole moment can produce a large, negative two-body scattering length that can collapse the Bose-Einstein condensate. To verify this effect, we validate mean-field solutions to this problem using exact, diffusion Monte Carlo methods. We show that the diffusion Monte Carlo energies are reproduced accurately within a mean-field framework if the variation of the
s
-wave scattering length with the dipole strength is accounted for properly.
PY - 2006
EP - 160402
T2 - Physical Review Letters
TI - Scattering Length Instability in Dipolar Bose-Einstein Condensates
VL - 97
SN - 0031-9007
ER -