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https://doi.org/10.1126/science.1085335
Title: | Radio-frequency spectroscopy of ultracold fermions | Authors: | Gupta, S Hadzibabic, Z Zwierlein, MW Stan, CA Dieckmann, K Schunck, CH van Kempen, EGM Verhaar, BJ Ketterle, W |
Keywords: | Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics COLLISION FREQUENCY-SHIFT LASER GAS |
Issue Date: | 13-Jun-2003 | Publisher: | AMER ASSOC ADVANCEMENT SCIENCE | Citation: | Gupta, S, Hadzibabic, Z, Zwierlein, MW, Stan, CA, Dieckmann, K, Schunck, CH, van Kempen, EGM, Verhaar, BJ, Ketterle, W (2003-06-13). Radio-frequency spectroscopy of ultracold fermions. SCIENCE 300 (5626) : 1723-1726. ScholarBank@NUS Repository. https://doi.org/10.1126/science.1085335 | Abstract: | Radio-frequency techniques were used to study ultracold fermions. We observed the absence of mean-field "clock" shifts, the dominant source of systematic error in current atomic clocks based on bosonic atoms. This absence is a direct consequence of fermionic antisymmetry. Resonance shifts proportional to interaction strengths were observed in a three-level system. However, in the strongly interacting regime, these shifts became very small, reflecting the quantum unitarity limit and many-body effects. This insight into an interacting Fermi gas is relevant for the quest to observe superfluidity in this system. | Source Title: | SCIENCE | URI: | https://scholarbank.nus.edu.sg/handle/10635/229477 | ISSN: | 00368075 10959203 |
DOI: | 10.1126/science.1085335 |
Appears in Collections: | Elements |
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