Many-body theories of density response for a strongly correlated Fermi gas
Many-body theories of density response for a strongly correlated Fermi gas
Hui Hu(
ARC Centre of Excellence for Quantum-Atom Optics, Centre for Atom Optics and Ultrafast Spectroscopy, Swinburne University of Technology, Melbourne 3122, Australia
Abstract ：Recent breakthroughs in the creation of ultracold atomic gases in the laboratory have ushered in major changes in physical science. Many novel experiments are now possible, with an unprecedented control of interaction, geometry and purity. Quantum many-body theory is facing severe challenges in quantitatively understanding new experimental results. Here, we review some recently developed theoretical techniques that provide successful predictions for density response of a strongly correlated atomic Fermi gas. These include the strong-coupling random-phase approximation theory, hightemperature quantum virial expansion, and asymptotically exact Tan relations applicable at large momentum.
Key words ：
quantum many-body theory
Fermi gas
收稿日期: 2011-09-18
出版日期: 2012-02-01
Corresponding Author(s):
Hu Hui,Email:HHU@groupwise.swin.edu.au
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