%0 Journal Article %J Phys. Rev. Lett. %D 2009 %T Many-Body Treatment of the Collisional Frequency Shift in Fermionic Atoms %A Rey, A M %A Alexey V. Gorshkov %A Rubbo, C %B Phys. Rev. Lett. %V 103 %P 260402 %G eng %U http://link.aps.org/abstract/PRL/v103/e260402/