Universal behavior of pair correlations in a strongly interacting Fermi gas
Quantum Gases
2015-05-18 v2
Abstract
We show that short-range pair correlations in a strongly interacting Fermi gas follow a simple universal law described by Tan's relations. This is achieved through measurements of the static structure factor which displays a universal scaling proportional to the ratio of Tan's contact to the momentum . Bragg spectroscopy of ultracold Li atoms from a periodic optical potential is used to measure the structure factor for a wide range of momenta and interaction strengths, providing broad confirmation of this universal law. We calibrate our Bragg spectra using the -sum rule, which is found to improve the accuracy of the structure factor measurement.
Keywords
Cite
@article{arxiv.1001.3200,
title = {Universal behavior of pair correlations in a strongly interacting Fermi gas},
author = {E. D. Kuhnle and H. Hu and X. -J. Liu and P. Dyke and M. Mark and P. D. Drummond and P. Hannaford and C. J. Vale},
journal= {arXiv preprint arXiv:1001.3200},
year = {2015}
}
Comments
Manuscript revised, 4 pages, 3 figures