Quantized vortex in Bose Einstein condensate of dilute atom gases

The vortex phase diagram in the external rotation frequency versus temperature is calculated for dilute Bose-Einstein condensed gases. It is determined within the Bogoliubov-Popov theory for a finite temperature where the condensate and noncondensate fractions are treated on an equal footing. The temperature dependences of various thermodynamic instability lines for the vortex nucleation are computed to construct the phase diagram. Experiments are proposed to resolve a recent controversy on the vortex creation problem associated with the quantized vortex observation in ${}^{87}\mathrm{Rb}$ atom gases.The vortex phase diagram in the external rotation frequency versus temperature is calculated for dilute Bose-Einstein condensed gases. It is determined within the Bogoliubov-Popov theory for a finite temperature where the condensate and noncondensate fractions are treated on an equal footing. The temperature dependences of various thermodynamic instability lines for the vortex nucleation are computed to construct the phase diagram. Experiments are proposed to resolve a recent controversy on the vortex creation problem associated with the quantized vortex observation in ${}^{87}\mathrm{Rb}$ atom gases.

arXiv:cond-mat/0104358Physical Review ASep 18, 200111 citations

Quantized Vortex in Bose-Einstein Condensate and Superfluid Helium

Makoto Tsubota

日本流体力学会年会講演論文集Jul 23, 20020 citations

{}^{87}\mathrm{Rb}

atom gases.