Bose-Einstein Condensate in a Linear Trap with a Dimple Potential  

作　　者：Haydar Uncu Devrim Tarhan 

机构地区：[1]Department of Physics,Adnan Menderes University [2]Department of Physics,Harran University

出　　处：《Communications in Theoretical Physics》2013年第5期629-637,共9页理论物理通讯（英文版）

基　　金：support by TUBITAK (Project No.108T003)

摘　　要：We study Bose-Einstein condensation in a linear trap with a dimple potential where we model dimple potentials by Dirac δ function. Attractive and repulsive dimple potentials are taken into account. This model allows simple, explicit numerical and analytical investigations of noninteracting gases. Thus, the Schrdinger equation is used instead of the Gross-Pitaevski equation. We calculate the atomic density, the chemical potential, the critical temperature and the condensate fraction. The role of the relative depth of the dimple potential with respect to the linear trap in large condensate formation at enhanced temperatures is clearly revealed. Moreover, we also present a semi-classical method for calculating various quantities such as entropy analytically. Moreover, we compare the results of this paper with the results of a previous paper in which the harmonic trap with a dimple potential in 1D is investigated.

关 键 词：Bose–Einstein condensate linear trap a dimple potential Dirac δ potential 

分 类 号：O469[理学—凝聚态物理]