Detailed view  PhD thesis 
Université Pierre et Marie Curie  Paris VI (09/11/2009), Dominique Delande (Dir.) 
Available versions:  v1 (20091203)  v2 (20140102) 
Attached file list to this document:  

Environmentinduced dynamics in a dilute BoseEinstein condensate 
Alexej Schelle^{1} 
We directly model the quantum many particle dynamics during the transition of a gas of N indistinguishable bosons into a BoseEinstein condensate. To this end, we develop a quantitative quantum master equation theory, which takes into account two body interaction processes, and in particular describes the particle number fluctuations characteristic for the BoseEinstein phase transition. Within the Markovian dynamics assumption, we analytically prove and numerically verify the Boltzmann ergodicity conjecture for a dilute, weakly interacting BoseEinstein condensate. The new physical bottom line of our theory is the direct microscopic monitoring of the BoseEinstein distribution during condensate formation in realtime, after a sudden quench of the noncondensate atomic density above the critical density for BoseEinstein condensation. 
1:  LKB (Jussieu)  Laboratoire Kastler Brossel 
BoseEinstein condensation – master equation theory – Boltzmann 
Environmentinduced dynamics in a dilute BoseEinstein condensate 
We directly model the quantum many particle dynamics during the transition of a gas of N indistinguishable bosons into a BoseEinstein condensate. To this end, we develop a quantitative quantum master equation theory, which takes into account two body interaction processes, and in particular describes the particle number fluctuations characteristic for the BoseEinstein phase transition. Within the Markovian dynamics assumption, we analytically prove and numerically verify the Boltzmann ergodicity conjecture for a dilute, weakly interacting BoseEinstein condensate. The new physical bottom line of our theory is the direct microscopic monitoring of the BoseEinstein distribution during condensate formation in realtime, after a sudden quench of the noncondensate atomic density above the critical density for BoseEinstein condensation. 
BoseEinstein condensation – master equation theory – Boltzmann 
tel00438496, version 1  
http://tel.archivesouvertes.fr/tel00438496  
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From: Alexej Schelle  
Submitted on: Thursday, 3 December 2009 17:41:11  
Updated on: Wednesday, 1 January 2014 12:34:37 