title: Evolution of the normal state of a strongly interacting Fermi gas from a pseudogap phase to a molecular Bose gas.
abstract: Wave-vector resolved radio frequency spectroscopy data for an ultracold trapped Fermi gas are reported for several couplings at T(c), and extensively analyzed in terms of a pairing-fluctuation theory. We map the evolution of a strongly interacting Fermi gas from the pseudogap phase into a fully gapped molecular Bose gas as a function of the interaction strength, which is marked by a rapid disappearance of a remnant Fermi surface in the single-particle dispersion. We also show that our theory of a pseudogap phase is consistent with a recent experimental observation as well as with quantum Monte Carlo data of thermodynamic quantities of a unitary Fermi gas above T(c).
authors.affiliation: Dipartimento di Fisica, Università di Camerino, I-62032 Camerino, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Perali
authors.forename: F
authors.initials: F
authors.lastname: Palestini
authors.forename: P
authors.initials: P
authors.lastname: Pieri
authors.forename: G C
authors.initials: GC
authors.lastname: Strinati
authors.forename: J T
authors.initials: JT
authors.lastname: Stewart
authors.forename: J P
authors.initials: JP
authors.lastname: Gaebler
authors.forename: T E
authors.initials: TE
authors.lastname: Drake
authors.forename: D S
authors.initials: DS
authors.lastname: Jin