Nonuniversal Efimov Atom-Dimer Resonances in a Three-Component Mixture of Li-6

作者：Nakajima Shuta^*; Horikoshi Munekazu; Mukaiyama Takashi; Naidon Pascal; Ueda Masahito

来源：Physical Review Letters, 2010, 105(2): 023201.

DOI：10.1103/PhysRevLett.105.023201

We observed an enhanced atom-dimer loss due to the existence of Efimov states in a three-component mixture of Li-6 atoms. We measured the magnetic-field dependence of the atom-dimer loss in the mixture of atoms in state vertical bar 1 > and dimers formed in states vertical bar 2 > and vertical bar 3 >, and found two peaks corresponding to the degeneracy points of the energy levels of vertical bar 23 > dimers and the ground and first excited Efimov trimers. We found that the locations of these peaks disagree with universal theory predictions, in a way that cannot be explained by nonuniversal two-body properties. We constructed theoretical models that characterize the nonuniversal three-body physics of three-component Li-6 atoms in the low-energy domain.

• 出版日期2010-7-9