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We analyze the dynamics of a condensate of ultra-cold atomic fermionsfollowing an abrupt change of the pairing strength. At long times, the systemgoes to a non-stationary steady state, which we determine exactly. Thesuperfluid order parameter asymptotes to a constant value. We show that theorder parameter vanishes when the pairing strength is decreased below a certaincritical value. In this case, the steady state of the system combinesproperties of normal and superfluid states - the gap and the condensatefraction vanish, while the superfluid density is nonzero.Comment: 4 pages, 3 figures, journal versio

Dynamical Vanishing of the Order Parameter in a Fermionic Condensate