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DPG

Frankfurt 2006 – scientific programme

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A: Atomphysik

A 9: Poster I: Ultrakalte Atome und BEC

A 9.1: Poster

Tuesday, March 14, 2006, 16:30–18:30, Labsaal

Thermostatics of ultracold Bose gases in 1D periodic potentials — •Matthias Rosenkranz, Oliver Zobay, and Gernot Alber — Institut für Angewandte Physik, Technische Universität Darmstadt, 64289 Darmstadt

We calculate critical properties of an ideal ultracold Bose gas at the condensation point in a one-dimensional optical lattice and transverse harmonic potential. The limiting cases for weak and strong lattice potentials at low and high condensation temperatures are characterized analytically. Intermediate regimes are investigated numerically on the basis of the exact dispersion relations. We also address changes to the ideal case due to the atomic interactions.

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