Please use this identifier to cite or link to this item: 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
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