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Dilute Bose-Einstein Condensate in a Trap: Characteristic Lengths and Critical Velocities | | Alexander L. Fetter
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18 Sep 1997 | | Subject: | Statistical Mechanics | cond-mat.stat-mech | | Affiliation: | Stanford | | Abstract: | The Bogoliubov approximation and the Gross-Pitaevskii equation characterize the effect of repulsive interactions on a dilute ideal Bose-Einstein gas in a spherical harmonic trap. For large $N$, the interactions expand the condensate relative to an ideal Bose gas; both the speed of sound and critical angular velocity $Omega_{c1}$ for creation of a quantized vortex depend crucially on the interparticle repulsion through the coherence length $xi$. | | Source: | arXiv, cond-mat/9709207 | | Services: | Forum | Review | PDF | Favorites | |
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