Using photoemission spectroscopy to probe a strongly interacting Fermi gas

• Published in: Nature (London) Vol. 454; no. 7205; pp. 744 - 747
• Main Authors: Jin, D. S, Stewart, J. T, Gaebler, J. P
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 07.08.2008; Nature Publishing; Nature Publishing Group
• Subjects: Atoms & subatomic particles; Classical and quantum physics: mechanics and fields; Emissions; Exact sciences and technology; Fermions; Gases; Humanities and Social Sciences; letter; Magnetic fields; Matter waves; Methods; multidisciplinary; Phase transitions; Photoemission; Physics; Radio frequency; Science; Spectroscopy; Spectrum analysis; United States; Optical lattices; Superconductors; Fermi gas; Quantum phase transition; Emission spectra; N-body problems; Excitation spectrum; High temperature; Superfluidity; Bose-Einstein condensation; BCS theory

Ultracold atomic gases provide model systems in which to study many-body quantum physics. Recent experiments using Fermi gases have demonstrated a phase transition to a superfluid state with strong interparticle interactions. This system provides a realization of the 'BCS-BEC crossover' co...