Criticality in Trapped Atomic Systems

Details Criticality in Trapped Atomic Systems Criticality in Trapped Atomic Systems

2010-03-12

arxiv.org/abs/1003.2655v2

Phys. Rev. Lett. 104, 245705 (2010)

Physics

Condensed Matter

Quantum Gases

4 pages, 3 figures; added references

Scientific paper

We discuss generic limits posed by the trap in atomic systems on the accurate determination of critical parameters for second-order phase transitions, from which we deduce optimal protocols to extract them. We show that under current experimental conditions the in-situ density profiles are barely suitable for an accurate study of critical points in the strongly correlated regime. Contrary to recent claims, the proper analysis of time-of-fight images yields critical parameters accurately.

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