Transition of a mesoscopic bosonic gas into a Bose-Einstein condensate
Alexej Schelle
TL;DR
This paper models the transition of a mesoscopic bosonic gas into a Bose-Einstein condensate, highlighting the evolution of quantum fluctuations and the approach to equilibrium using a number conserving master equation.
Contribution
It introduces a detailed theoretical model of condensate formation in a mesoscopic system, emphasizing quantum fluctuations and relaxation dynamics.
Findings
Quantum fluctuations decrease during condensate growth.
The system relaxes to Gibbs-Boltzmann equilibrium.
Model captures transition dynamics of mesoscopic Bose gases.
Abstract
The condensate number distribution during the transition of a dilute, weakly interacting gas of N=200 bosonic atoms into a Bose-Einstein condensate is modeled within number conserving master equation theory of Bose-Einstein condensation. Initial strong quantum fluctuations occuring during the exponential cycle of condensate growth reduce in a subsequent saturation stage, before the Bose gas finally relaxes towards the Gibbs-Boltzmann equilibrium.
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