title: Nonuniversal Efimov atom-dimer resonances in a three-component mixture of 6Li.
abstract: We observed an enhanced atom-dimer loss due to the existence of Efimov states in a three-component mixture of 6Li atoms. We measured the magnetic-field dependence of the atom-dimer loss in the mixture of atoms in state |1> and dimers formed in states |2> and |3>, and found two peaks corresponding to the degeneracy points of the energy levels of |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 6Li atoms in the low-energy domain.
authors.affiliation: Department of Physics, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. shuta@cat.phys.s.u-tokyo.ac.jp
authors.forename: Shuta
authors.initials: S
authors.lastname: Nakajima
authors.forename: Munekazu
authors.initials: M
authors.lastname: Horikoshi
authors.forename: Takashi
authors.initials: T
authors.lastname: Mukaiyama
authors.forename: Pascal
authors.initials: P
authors.lastname: Naidon
authors.forename: Masahito
authors.initials: M
authors.lastname: Ueda