Number-of-particle fluctuations in systems with Bose-Einstein condensate
نویسندگان
چکیده
منابع مشابه
Fluctuations of Bose-Einstein Condensate
The recent achievement of Bose-Einstein condensation (BEC) in trapped atoms of dilute gases [1–3] has been quickly followed by the quantitative measurements of the condensate’s properties. In particular the dependence of the fraction of atoms in the condensate on the temperature has been found to be in agreement with the theory of the noninteracting Bose gas in a harmonic trap [4]. From the poi...
متن کاملAmplification of fluctuations in a spinor Bose-Einstein condensate
Dynamical instabilities in a Rb F=1 spinor Bose-Einstein condensate are used as a parametric amplifier of quantum spin fluctuations. We demonstrate the spectrum of this amplifier to be tunable, in quantitative agreement with theory. We quantify the microscopic spin fluctuations of the initially paramagnetic condensate by applying this amplifier and measuring the resulting macroscopic magnetizat...
متن کاملNumber Fluctuations and Phase Diffusion in a Bose-Einstein Condensate of Light
Bose-Einstein condensates of quasiparticles such as exciton-polaritons, magnons and massive photons allow for new experimental possibilities as compared to the atomic Bose-Einstein condensates. In this Thesis we focus on a condensate of photons, first created at Bonn University in 2010. One of the recent achievements is the measurement of number fluctuations in such a condensate of photons. We ...
متن کاملInteraction effects on number fluctuations in a Bose-Einstein condensate of light.
We investigate the effect of interactions on condensate-number fluctuations in Bose-Einstein condensates. For a contact interaction we variationally obtain the equilibrium probability distribution for the number of particles in the condensate. To facilitate comparison with experiment, we also calculate the zero-time delay autocorrelation function g((2))(0) for different strengths of the interac...
متن کاملFluctuations of the Weakly Interacting Bose-Einstein Condensate
Zbigniew Idziaszek,1,3 Mariusz Gajda,2,3 Patrick Navez,4,5 Martin Wilkens,4 and Kazimierz Rza̧żewski1,3 1Center for Theoretical Physics, Polish Academy of Sciences, Aleja Lotników 32/46, 02 668 Warsaw, Poland 2Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, 02 668 Warsaw, Poland 3College of Science, Aleja Lotników 32/46, 02 668 Warsaw, Poland 4Institut für Physik, Univers...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Laser Physics Letters
سال: 2005
ISSN: 1612-2011,1612-202X
DOI: 10.1002/lapl.200410157