Hannover 2003 – wissenschaftliches Programm

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Q: Quantenoptik

Q 41: Quantengase 4

Q 41.7: Vortrag

Donnerstag, 27. März 2003, 15:30–15:45, E001

Quantum dynamics in quasi one-dimensional gases — •Reinhold Walser — Abteilung für Quantenphysik, Universität Ulm

The thermo-dynamic behavior of quantum gases responds sensitively to the dimensionality of a system. Consequently, one finds that the importance of fluctuations growths with the reduction of available phase-space [1]. For example, this suppresses BEC in a strictly one-dimensional homogeneous gas (Mermin-Wagner-Hohenberg theorem).

However, it has been demonstrated already in many contexts that trapped gases of finite number and spatial extension are qualitatively different. In the present contribution, we are going to study the non-equilibrium response [2] of a quasi one-dimensional gas, as it is realized in a prolate configuration [3]. In particular, we will investigate the spatial correlation properties of the gas.

[1] D. Petrov, et al., Phys. Rev. Lett, 85, 3745 (2000)

[2] R. Walser, et al., Phys. Rev. A, 63, 013607 (2001)

[3] A. Görlitz, et al., Phys. Rev. Lett., 87, 130402 (2001)