Criticality and Correlations in Cold Atomic Gases

  • Michael Köhl
  • Tobias Donner
  • Stephan Ritter
  • Thomas Bourdel
  • Anton Öttl
  • Ferdinand Brennecke
  • Tilman Esslinger
Part of the Advances in Solid State Physics book series (ASSP, volume 47)


We study the phase transition of Bose—Einstein condensation in a dilute atomic gas very close to the critical temperature. The critical regime we enter is governed by fluctuations extending far beyond the length scale of thermal de-Broglie waves. Using matter-wave interference we measure the correlation length of these critical fluctuations as a function of temperature. From this we determine the critical exponent of the correlation length for a trapped, weakly interacting Bose gas to be v = 0.67 ± 0.13.


Critical Temperature Correlation Length Critical Exponent Atomic Beam Einstein Condensation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Michael Köhl
    • 1
    • 2
  • Tobias Donner
    • 1
  • Stephan Ritter
    • 1
  • Thomas Bourdel
    • 1
    • 3
  • Anton Öttl
    • 1
    • 4
  • Ferdinand Brennecke
    • 1
  • Tilman Esslinger
    • 1
  1. 1.Institute for Quantum ElectronicsETH ZürichZürichSwitzerland
  2. 2.Department of PhysicsUniversity of CambridgeCambridgeUK
  3. 3.Laboratoire Charles Fabry de l’institut d’Optique, CNRSUniv Paris-SudPalaiseau cedexFrance
  4. 4.Department of PhysicsUniversity of CaliforniaBerkeleyUSA

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