论文标题
SU（2）XSU（6） - 对称Fermi-Fermi混合物中的轨道间相互作用
Interorbital Interactions in an SU(2)xSU(6)-Symmetric Fermi-Fermi Mixture
论文作者
论文摘要
我们表征了1S0基态原子之间的原子间和内膜间相互作用，而在171yb和173yb的相互作用的Fermi-Fermi混合物中，原子的3P0亚稳态。我们执行高精度时钟光谱，以测量深3D光学晶格中相互作用引起的能量移位，并确定相应的散射长度。我们发现，间异位素混合物的弹性相互作用173YB_E-171YB_G和173YB_G-171YB_E具有较弱的吸引力且非常相似，而相应的两体损耗系数则差异超过两个数量级。通过比较不同的自旋混合物，我们通过实验证明了所有弹性和非弹性相互作用的SU（2）XSU（6）对称性。此外，我们测量了171yb中的自旋交换相互作用，并确认其先前观察到的抗磁性性质。
We characterize inter- and intraisotope interorbital interactions between atoms in the 1S0 ground state and the 3P0 metastable state in interacting Fermi-Fermi mixtures of 171Yb and 173Yb. We perform high-precision clock spectroscopy to measure interaction-induced energy shifts in a deep 3D optical lattice and determine the corresponding scattering lengths. We find the elastic interaction of the interisotope mixtures 173Yb_e-171Yb_g and 173Yb_g-171Yb_e to be weakly attractive and very similar, while the corresponding two-body loss coefficients differ by more than two orders of magnitude. By comparing different spin mixtures we experimentally demonstrate the SU(2)xSU(6) symmetry of all elastic and inelastic interactions. Furthermore, we measure the spin-exchange interaction in 171Yb and confirm its previously observed antiferromagnetic nature.
