...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical Review, A >Dimensionally induced one-dimensional to three-dimensional phase transition of the weakly interacting ultracold Bose gas
【24h】

Dimensionally induced one-dimensional to three-dimensional phase transition of the weakly interacting ultracold Bose gas

机译：尺寸诱导弱相互作用的超容器瓶气的三维相位转变

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We investigate the dimensionally induced phase transition from the normal to the Bose-Einstein-condensed phase for a weakly interacting Bose gas in an optical lattice. To this end we make use of the Hartree-Fock- Bogoliubov-Popov theory, where we include numerically exact hopping energies and effective interaction strengths. At first we determine the critical chemical potential, where we find a much better agreement with recent experimental data than a pure Hartree-Fock treatment. This finding originates from an important correction due to quantum fluctuations, which are enhanced in lower dimensions. Furthermore, we determine for the one-dimensional to three-dimensional transition the power-law exponent of the critical temperature for two different noninteracting Bose gas models yielding the same value of 1/2, which indicates that they belong to the same universality class. For the weakly interacting Bose gas we find for both models that this exponent is robust with respect to finite interaction strengths.
机译：我们研究了从正常到的较常见的相转变对光学晶格中的弱相互作用的血液气体的尺寸诱导的相变。为此，我们利用了Hartree-Fock-Bogoliubov-Popov理论，在那里我们包括数值精确的跳跃能量和有效的相互作用优势。起初我们确定了批判性化学潜力，在那里我们发现与最近的实验数据有比纯的Hartree-Fock治疗更好。该发现源自由于量子波动引起的重要校正，这在较低的尺寸下增强。此外，我们确定了一维到三维的转变的临界温度的两个不同的非相互作用玻色气体模型得到的1/2相同的值，这表明它们属于同一个普适类幂律指数。对于弱互动的BOSE气体，我们发现这两种模型对于具有有限相互作用强度的指数是鲁棒的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号