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Observation of Fermi Polarons in a Tunable Fermi Liquid of Ultracold Atoms
Open accessAbstract
We have observed Fermi polarons, dressed spin-down impurities in a spin-up Fermi sea of ultracold atoms. The polaron manifests itself as a narrow peak in the impurities' rf spectrum that emerges from a broad incoherent background. We determine the polaron energy and the quasiparticle residue for various interaction strengths around a Feshbach resonance. At a critical interaction, we observe the transition from polaronic to molecular binding. Here, the imbalanced Fermi liquid undergoes a phase transition into a Bose liquid, coexisting with a Fermi sea.
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Cited by
Quantum simulations with ultracold quantum gases
Bloch, I., Dalibard, J., & Nascimbène, S. (2012) · Nature Physics · doi:10.1038/nphys2259 · Cited by 2,339
Quantum dynamics of impurities in a one-dimensional Bose gas
Catani, J., Lamporesi, G., Naik, D., Gring, M., Inguscio, M., Minardi, F., Kantian, A., & Giamarchi, T. (2012) · Physical Review A · doi:10.1103/physreva.85.023623 · Cited by 357
Nascimbène, S., Navon, N., Jiang, K. J., Tarruell, L., Teichmann, M., McKeever, J., Chevy, F., & Salomon, C. (2009) · Physical Review Letters · doi:10.1103/physrevlett.103.170402 · Cited by 329
Orthogonality Catastrophe and Decoherence in a Trapped-Fermion Environment
Sindona, A., Goold, J., Lo Gullo, N., Lorenzo, S., & Plastina, F. (2013) · Physical Review Letters · doi:10.1103/physrevlett.111.165303 · Cited by 55
Metadata
- Authors
- Schirotzek, A., Wu, C.-H., Sommer, A., & Zwierlein, M. W.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2009-06-08
- Volume
- 102
- Issue
- 23
- Pages
- 230402-230402
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2162808923
- Cited by
- 634
- References
- 0
- FWCI
- 20.82
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Schirotzek, A., Wu, C.-H., Sommer, A., & Zwierlein, M. W. (2009). Observation of Fermi Polarons in a Tunable Fermi Liquid of Ultracold Atoms. Physical Review Letters. https://doi.org/10.1103/physrevlett.102.230402
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