Tomographic RF Spectroscopy of a Trapped Fermi Gas at Unitarity
Other Condensed Matter
2009-11-13 v1 Soft Condensed Matter
Abstract
We present spatially resolved radio-frequency spectroscopy of a trapped Fermi gas with resonant interactions and observe a spectral gap at low temperatures. The spatial distribution of the spectral response of the trapped gas is obtained using in situ phase-contrast imaging and 3D image reconstruction. At the lowest temperature, the homogeneous rf spectrum shows an asymmetric excitation line shape with a peak at 0.48(4) with respect to the free atomic line, where is the local Fermi energy.
Keywords
Cite
@article{arxiv.0705.3858,
title = {Tomographic RF Spectroscopy of a Trapped Fermi Gas at Unitarity},
author = {Y. Shin and C. H. Schunck and A. Schirotzek and W. Ketterle},
journal= {arXiv preprint arXiv:0705.3858},
year = {2009}
}