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  1. 1 Open Physics

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  1. 1 2010

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  1. 1 Barragán-Gil L.

  2. 1 Camacho A.

  3. 1 Macías A.

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Alternative method for the measurement of the temperature of a Bose-Einstein condensate

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Camacho A., Barragán-Gil L., Macías A.
Open Physics
|
2010
|
vol. 8
|
issue 5
717-725
EN
Usually the temperature in a Bose-Einstein condensate is experimentally deduced resorting to the comparison between the Maxwell-Boltzmann velocity distribution function and the density profile in momentum space. Though a successful method it is merely an approximation, since it also implies the use of classical statistical mechanics at temperatures close to the condensation temperature where quantum effects play a relevant role and cannot be neglected. The present work puts forward an alternative method in which we use an ultra-intense light pulse and a nonlinear optical material as detectors for differences in times-of-flight, and in this way the temperature is deduced.
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