1. Fluctuating ground-state occupation number for trapped BEC
Jürgen Bosse
Freie Universität Berlin
Panjab University, Chandigarh rd March, 2014

2. Overview Introduction GCE unknowns: N0, dN0, etc.
Calculate N0 for trapped bosons within TDL assuming fixed N
Calculate corresponding dN0
Plots of N0, f0, and f1 needed for HFA

8. N=200
N=2000

10. Summary and Outlook TDL and SCA agree for N>>1
It is essential to consistently determine Tc
Restricting to fixed N does not describe the photon
BEC experiment correctly. The „grand-canonical“ reservoir
needs a more realistic description e.g. the one given by
Weitz group.
Fixing N will result in small fluctuation corrections in HFA.