Contact and Momentum Distribution of the Unitary Fermi Gas

R. Rossi, Takahiro Ohgoe, E. Kozik, N. Prokof'Ev, B. Svistunov, K. Van Houcke, F. Werner

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15 Citations (Scopus)

Abstract

A key quantity in strongly interacting resonant Fermi gases is the contact C, which characterizes numerous properties such as the momentum distribution at large momenta or the pair correlation function at short distances. The temperature dependence of C was measured at unitarity, where existing theoretical predictions differ substantially even at the qualitative level. We report accurate data for the contact and the momentum distribution of the unitary gas in the normal phase, obtained by bold diagrammatic Monte Carlo and Borel resummation. Our results agree with experimental data within error bars and provide crucial benchmarks for the development of advanced theoretical treatments and precision measurements.

Original languageEnglish
Article number130406
JournalPhysical Review Letters
Volume121
Issue number13
DOIs
Publication statusPublished - 2018 Sep 27
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Rossi, R., Ohgoe, T., Kozik, E., Prokof'Ev, N., Svistunov, B., Van Houcke, K., & Werner, F. (2018). Contact and Momentum Distribution of the Unitary Fermi Gas. Physical Review Letters, 121(13), [130406]. https://doi.org/10.1103/PhysRevLett.121.130406