Measurement of an Efimov trimer binding energy in a three-component mixture of 6Li |
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Authors: | Nakajima Shuta Horikoshi Munekazu Mukaiyama Takashi Naidon Pascal Ueda Masahito |
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Institution: | Department of Physics, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. shuta@cat.phys.s.u-tokyo.ac.jp |
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Abstract: | The binding energy of an Efimov trimer state was precisely determined via radio-frequency association. It is found that the measurement results shift significantly with temperature, but that the shift becomes negligible at the lowest temperature in our experiment. The shift-free part of the trimer binding energy reveals a significant deviation from the nonuniversal theory prediction based on a three-body parameter with a monotonic binding-energy dependence. |
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