Altmeyer A, Riedl S, Kohstall C, Wright M J, Geursen R, Bartenstein M, Chin C, Denschlag J Hecker, Grimm R
Institute of Experimental Physics, Center for Quantum Physics, University of Innsbruck, 6020 Innsbruck, Austria.
Phys Rev Lett. 2007 Jan 26;98(4):040401. doi: 10.1103/PhysRevLett.98.040401. Epub 2007 Jan 22.
We report on precision measurements of the frequency of the radial compression mode in a strongly interacting, optically trapped Fermi gas of (6)Li atoms. Our results allow for a test of theoretical predictions for the equation of state in the BEC-BCS crossover. We confirm recent quantum Monte Carlo results and rule out simple mean-field BCS theory. Our results show the long-sought beyond-mean-field effects in the strongly interacting Bose-Einstein condensation (BEC) regime.
我们报告了在强相互作用的、光学捕获的(6)Li原子费米气体中径向压缩模式频率的精确测量结果。我们的结果使得对玻色-爱因斯坦凝聚-BCS交叉区域状态方程的理论预测进行检验成为可能。我们证实了最近的量子蒙特卡罗结果，并排除了简单的平均场BCS理论。我们的结果显示了在强相互作用玻色-爱因斯坦凝聚（BEC）区域长期以来寻找的超越平均场的效应。
