Bogoliubov excitation spectrum of an elongated condensate throughout a transition from quasi-one-dimensional to three-dimensional
文献类型：期刊论文
| 作者 | Yang, Tao1,2; Henning, Andrew J.1; Benedict, Keith A.1 |
| 刊名 | JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
 |
| 出版日期 | 2014-02-14 |
| 卷号 | 47 |
| 关键词 | Bogoliubov Excitation Spectrum Highly Anisotropic Trap Elongated Condensate Effective 1d-gp Equation Transition Crossover Junction |
| ISSN号 | 0953-4075 |
| DOI | 10.1088/0953-4075/47/3/035302 |
| 文献子类 | Article |
| 英文摘要 | The quasiparticle excitation spectra of a Bose gas trapped in a highly anisotropic trap is studied with respect to varying total number of particles by numerically solving the effective one-dimensional (1D) Gross-Pitaevskii (GP) equation proposed recently by Mateo et al. We obtain the static properties and Bogoliubov spectra of the system in the high energy domain. This method is computationally efficient and highly accurate for a condensate system undergoing a 1D to three-dimensional (3D) cigar-shaped transition, as is shown through a comparison of our results with both those calculated by the 3D-GP equation and analytical results obtained in limiting cases. We identify the applicable parameter space for the effective 1D-GP equation and find that this equation fails to describe a system with a large number of atoms. We also identify that the description of the transition from 1D Bose-Einstein condensate (BEC) to 3D cigar-shaped BEC using this equation is not smooth, which highlights the fact that for a finite value of a(perpendicular to)/a(s) the junction between the 1D and 3D crossover is not perfect. |
| WOS关键词 | BOSE-EINSTEIN CONDENSATE ; LOW-ENERGY EXCITATIONS ; COLLECTIVE EXCITATIONS ; NONLINEAR DYNAMICS ; GASES ; SYSTEMS ; TRAPS |
| 语种 | 英语 |
| WOS记录号 | WOS:000330215600013 |
| 出版者 | IOP PUBLISHING LTD |
| 源URL | [http://119.78.100.186/handle/113462/49477]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Yang, Tao |
| 作者单位 | 1.Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England 2.NW Univ Xian, Inst Modern Phys, Xian 710069, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Tao,Henning, Andrew J.,Benedict, Keith A.. Bogoliubov excitation spectrum of an elongated condensate throughout a transition from quasi-one-dimensional to three-dimensional[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,2014,47. |
| APA | Yang, Tao,Henning, Andrew J.,&Benedict, Keith A..(2014).Bogoliubov excitation spectrum of an elongated condensate throughout a transition from quasi-one-dimensional to three-dimensional.JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,47. |
| MLA | Yang, Tao,et al."Bogoliubov excitation spectrum of an elongated condensate throughout a transition from quasi-one-dimensional to three-dimensional".JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 47(2014). |
入库方式： OAI收割
来源：近代物理研究所
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