Open AccessLow-dimensional Bose-Einstein condensation in finite-number trapped atoms
Author(s) -
Cui Hai-Tao,
Lin-Cheng Wang,
Yi Xue-Xi
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.991
Subject(s) - bose–einstein condensate , physics , fermi gamma ray space telescope , condensation , condensed matter physics , fermi level , trap (plumbing) , thomas–fermi model , quantum mechanics , thermodynamics , meteorology , electron
The effect of finite number of trapped atoms is discussed in Bose-Einstein condensation without interaction, according to Thomas-Fermi approximation. We obtain the state density by high-temperature expansion and calculate the critical temperature in one-dimensional(1D) and two-dimensional(2D) trap potentials. Then the temperature dependence of specific heat are analyzed. The results show that: in 2D case, the specific heat c is proportional to T2; in 1D case,c increases linearly with temperature.