Volume 96, Number 1, October 2011
|Number of page(s)||5|
|Published online||22 September 2011|
Statistical properties of one-dimensional attractive Bose gas
College of Inter-Faculty Individual Studies in Mathematics and Natural Sciences, University of Warsaw ul. Żwirki i Wigury 93, 02-089 Warszawa, Poland, EU
2 Center for Theoretical Physics, Polish Academy of Sciences - Aleja Lotników 32/46, 02-668 Warsaw, Poland, EU
3 5. Physikalisches Institut, Universität Stuttgart - Pfaffenwaldring 57, 70550 Stuttgart, Germany, EU
4 Institute of Physics, Polish Academy of Sciences - Aleja Lotników 32/46, 02-668 Warsaw, Poland, EU
5 Faculty of Mathematics and Sciences, Cardinal Stefan Wyszyński University - ulica Dewajtis 5, 01-815 Warsaw, Poland, EU
Accepted: 24 August 2011
Using the classical field approximation we present the first study of statistical properties of one-dimensional Bose gas with attractive interaction. The canonical probability distribution is generated with the help of a Monte Carlo method. This way we obtain not only the depletion of the condensate with growing temperature but also its fluctuations. The most important is our discovery of a reduced coherence length, the phenomenon observed earlier only for the repulsive gas, known as quasicondensation.
PACS: 03.75.Hh – Static properties of condensates; thermodynamical, statistical, and structural properties / 67.85.-d – Ultracold gases, trapped gases
© EPLA, 2011
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