Abstract
We describe and justify a simple model for the dynamics associated with rapid sweeps across a Feshbach resonance, from the atomic to the molecular side, in an ultracold Fermi system. The model allows us to relate the observed molecule momentum distribution to equilibrium properties of the initial state. In particular, the dependence of the total molecule number on the sweep rate is found to be a sensitive probe of pairing in the initial state, whether condensed or not. This can be used to establish the presence of a phase fluctuation induced "pseudogap" phase in these systems.
Keywords
PairingFeshbach resonancePhysicsPseudogapMomentum (technical analysis)Phase (matter)Projection (relational algebra)MoleculeFermi Gamma-ray Space TelescopeAtomic physicsStatistical physicsCondensed matter physicsQuantum mechanics
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Publication Info
- Year
- 2005
- Type
- article
- Volume
- 95
- Issue
- 11
- Pages
- 110404-110404
- Citations
- 71
- Access
- Closed
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Cite This
Ehud Altman,
Ashvin Vishwanath
(2005).
Dynamic Projection on Feshbach Molecules: A Probe of Pairing and Phase Fluctuations.
Physical Review Letters
, 95
(11)
, 110404-110404.
https://doi.org/10.1103/physrevlett.95.110404
Identifiers
- DOI
- 10.1103/physrevlett.95.110404