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弱相互作用对束缚的玻色气体的影响
  • ISSN号：0455-2059
  • 期刊名称：《兰州大学学报：自然科学版》
  • 时间：0
  • 分类：O431[机械工程—光学工程;理学—光学;理学—物理]
  • 作者机构：[1]兰州大学物理科学与技术学院理论物理研究所,兰州730000
  • 相关基金：Supported by the National Natural Science Foundation of China （10704031）; National Science Foundation for Fostering Talents in Basic Research of the National Natural Science Foundation of China （J0630313）; Fundamental Research Fund for Physics and Mathematics of Lanzhou University （LZU05001）; Natural Science Foundation of Gansu Province （3ZS061-A25-035）
作者： 谭磊[1], 朱坤雁[1], 吕纯海[1]
关键词： 玻色-爱因斯坦凝聚, 临界温度, 绝热冷却, Bose-Einstein condensation, critical temperature, adiabatically cooling
中文摘要：

在半经典近似下，考虑了弱相互作用对幂型势阱中玻色-爱因斯坦凝聚体的影响．从结果中发现，相对于理想玻色气体，排斥力会使得临界温度升高，其偏移量正比于s-波散射长度α，而相互作用能和比热则是相应的减小．对弱相互作用下绝热冷却的研究表明，玻色气体之间的相互作用越强，其对外场的敏感性越弱．

英文摘要：

The influence of weak interaction on a Bose-Einstein condensation was considered in a powerlaw potential using the semiclassical approximation. Critical temperature of repulsive interaction exhibited an upward shift proportional to s-wave scattering length α, while interaction energy and specific heat decreased. Exploring weak interaction influence on adiabatically cooling provided evidence that relatively strongly interacting gases react less susceptibly to the external field.

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期刊信息
  • 《兰州大学学报：自然科学版》
  • 中国科技核心期刊
  • 主管单位:教育部
  • 主办单位:兰州大学
  • 主编：涂永强
  • 地址：兰州市天水南路222号
  • 邮编：730000
  • 邮箱：jns@lzu.edu.cn
  • 电话：0931-8912707
  • 国际标准刊号：ISSN：0455-2059
  • 国内统一刊号：ISSN：62-1075/N
  • 邮发代号:54-3
  • 获奖情况:
  • 全国自然科学类核心期刊,甘肃省优秀科技期刊
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,美国数学评论（网络版）,德国数学文摘,荷兰文摘与引文数据库,英国动物学记录,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,英国英国皇家化学学会文摘,中国北大核心期刊（2000版）
  • 被引量:12892