6533b82cfe1ef96bd128f481
RESEARCH PRODUCT
Coherence and clock shifts in ultracold fermi gases with resonant interactions.
Zhenhua YuGordon BaymGordon BaymChristopher J. PethickMartin ZwierleinMartin Zwierleinsubject
PhysicsCondensed Matter::Quantum GasesStrongly Correlated Electrons (cond-mat.str-el)Condensed Matter - SuperconductivityGeneral Physics and AstronomyResonanceFOS: Physical sciencesScattering lengthSuperconductivity (cond-mat.supr-con)Condensed Matter - Strongly Correlated ElectronsAtomic physicsFermi gasFeshbach resonanceFermi Gamma-ray Space TelescopeCoherence (physics)description
Using arguments based on sum rules, we derive a general result for the average shifts of rf lines in Fermi gases in terms of interatomic interaction strengths and two-particle correlation functions. We show that near an interaction resonance shifts vary inversely with the atomic scattering length, rather than linearly as in dilute gases, thus accounting for the experimental observation that clock shifts remain finite at Feshbach resonances.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-07-05 | Physical review letters |