2010/03/31 by Christophe Mora, Frédéric Chevy · 50 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Electron #Fermi Gamma-ray Space Telescope #Fermi gas #Fermi liquid theory #Pauli exclusion principle #Physics #Physics of Superconductivity and Magnetism #Polaron #Quantum and electron transport phenomena #Quantum mechanics #Superconductivity #cond-mat.quant-gas
paper · pdf · doi:10.1103/physrevlett.104.230402
published in Physical Review Letters 104(23), 230402 (American Physical Society) · 4 pages, 2 figures, published in PRL
openalex publication_date 2010/06/08 · arxiv created 2010/06/12 · arxiv updated 2010/06/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Recent experiments on imbalanced Fermi gases have raised interest in the physics of an impurity immersed in a Fermi sea, the so-called Fermi polaron. In this Letter, a simple theory is devised to describe dilute Fermi-polaron ensembles corresponding to the normal phase of an imbalanced Fermi gas. An exact formula is obtained for the dominant interaction between polarons, expressed solely in terms of a single-polaron parameter. The physics of this interaction is identified as a signature of the Pauli exclusion principle.