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Measurement of an Efimov trimer binding energy in a three-component mixture of 6Li

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arxiv 1010.1954 v1 pith:S4EAOW5U submitted 2010-10-10 cond-mat.quant-gas

classification cond-mat.quant-gas
keywords energybindingtrimerefimovmeasurementshifttemperatureassociation
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The binding energy of an Efimov trimer state was precisely determined via radio-frequency association. It is found that the measurement results significantly shift with temperature, but that the shift can be made negligible at the lowest temperature in our experiment. The obtained trimer binding energy reveals a significant deviation from the nonuniversal theory prediction based on a three-body parameter with a monotonic energy dependence.

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