2007/09/30 by Pietro Massignan, P. Massignan, Georg M. Bruun +2 · 3 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Atomic physics #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Electron #Fermi Gamma-ray Space Telescope #Fermi gas #Homogeneous #Physics #Pseudogap #Quantum mechanics #Spectral line #Statistical physics #Strong Light-Matter Interactions #Superconductivity #Unitarity #cond-mat.other #cond-mat.str-el
paper · pdf · doi:10.1103/physreva.77.031601
published as Phys.Rev.A77:031601,2008 · v3: version accepted for publication as a Rapid Communication in PRA. With respect to v2, minor changes in the text and in the inset of Fig. 2
openalex publication_date 2008/03/03 · arxiv created 2008/03/04 · arxiv updated 2014/11/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We calculate the radio-frequency spectrum of balanced and imbalanced ultracold Fermi gases in the normal phase at unitarity. For the homogeneous case the spectrum of both the majority and minority components always has a single peak even in the pseudogap regime. We furthermore show how the double-peak structures observed in recent experiments arise due to the inhomogeneity of the trapped gas. The main experimental features observed above the critical temperature in the recent experiment of Schunck et al. [Science 316, 867 (2007)] are recovered with no fitting parameters.