Confinement induced molecules in a 1D Fermi gas -: art. no. 210401
Confinement induced molecules in a 1D Fermi gas -: art. no. 210401
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DOI：
10.1103/physrevlett.94.210401
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发表时间：
2005-06-03
影响因子：
8.6
通讯作者：
Esslinger, T
中科院分区：
文献类型：
--
作者：
Moritz, H;Stöferle, T;Esslinger, T
我们观察到限制在一维物质波导中的原子的双粒子束缚态。与自由空间中的情况相反，这些束缚态的存在与散射长度的符号无关。使用射频光谱，我们测量了这些二聚体的结合能作为散射长度和限制的函数，并发现与理论有很好的一致性。我们在光学晶格中产生的强相互作用的一维费米气体代表了可调谐路廷格液体的实现。
We have observed two-particle bound states of atoms confined in a one-dimensional matter waveguide. These bound states exist irrespective of the sign of the scattering length, contrary to the situation in free space. Using radio-frequency spectroscopy we have measured the binding energy of these dimers as a function of the scattering length and confinement and find good agreement with theory. The strongly interacting one-dimensional Fermi gas which we create in an optical lattice represents a realization of a tunable Luttinger liquid.