Volume 129, Number 4, February 2020
|Number of page(s)||7|
|Published online||27 March 2020|
Time-dependent entropy of a cooling Bose gas
Institut für Theoretische Physik der Universität Heidelberg - Philosophenweg 12-16, D-69120 Heidelberg, Germany, EU
Received: 19 December 2019
Accepted: 14 March 2020
Exact analytic solutions of a nonlinear boson diffusion equation with suitable initial conditions that account for evaporative cooling of ultracold atoms, plus boundary conditions at the singularity are presented, and used to calculate the time-dependent entropy of a cold quantum gas.
PACS: 05.30.Jp – Boson systems / 05.20.Dd – Kinetic theory / 05.45.-a – Nonlinear dynamics and chaos
© EPLA, 2020
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