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玻色-爱因斯坦凝聚中的色散关系
  • ISSN号：1674-1056
  • 期刊名称：《中国物理B：英文版》
  • 时间：0
  • 分类：O441[理学—电磁学;理学—物理]
  • 作者机构：[1]山东科技大学理学院,山东青岛266510, [2]兰州大学物理科学与技术学院,甘肃兰州730000
  • 相关基金：国家自然科学基金项目（10704031）;甘肃省自然科学基金项目（3ZS061-A25-035）
作者： 徐岩[1], 侯风超[1], 徐世林[1], 李照鑫[1], 谭磊[2]
关键词： 玻色-爱因斯坦凝聚, 超流, GROSS-PITAEVSKII方程, Bose-Einstein Condensates, superfluidity, Gross-Pitaevskii Equation
中文摘要：

超流性是玻色-爱因斯坦凝聚宏观量子效应的重要体现，分别用运动方程法和哈密顿量对角化方法，通过傅里叶变换导出了玻色-爱因斯坦凝聚超流体的色散关系，并给出了凝聚体中声子速度的表达式。结果表明，在长波极限下，色散关系与波数近似成线性关系。

英文摘要：

The superfluidity is an important property of macroscopic quantum effect in Bose Einstein Condensates. In this paper, we obtain the dispersion relation in Bose-Einstein Condensates by way of Fourier transformation and by means of two methods of both equation of motion and diagonalization Hamiltonian of the system respectively and we present the expression of quantum velocity in eondensates. The results show that the dispersion relation is linearly proportional to the wave number under long wavelength limit.

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期刊信息
  • 《中国物理B：英文版》
  • 中国科技核心期刊
  • 主管单位:中国科学院
  • 主办单位:中国物理学会和中国科学院物理研究所
  • 主编：欧阳钟灿
  • 地址：北京 中关村 中国科学院物理研究所内
  • 邮编：100080
  • 邮箱：
  • 电话：010-82649026 82649519
  • 国际标准刊号：ISSN：1674-1056
  • 国内统一刊号：ISSN：11-5639/O4
  • 邮发代号:
  • 获奖情况:
  • 国内外数据库收录:
  • 被引量:406