# Observation of pseudogap behaviour in a strongly interacting Fermi gas

@article{Gaebler2010ObservationOP, title={Observation of pseudogap behaviour in a strongly interacting Fermi gas}, author={J. P. Gaebler and John T. Stewart and Tara E. Drake and Deborah S. Jin and Andrea Perali and Pierbiagio Pieri and G Calvanese Strinati}, journal={Nature Physics}, year={2010}, volume={6}, pages={569-573} }

An ultracold gas of strongly interacting fermions exhibits a pseudogap phase in which pairs of fermions exist above the superfluid transition, but lack the phase coherence of a superfluid.

## 181 Citations

Ultracold Fermi gases: Pre-pairing for condensation

- Physics
- 2010

Pair formation and condensation usually occur together in Fermi superfluids. The observation of a pseudogap that implies pairing above the condensation temperature in a strongly interacting Fermi gas…

Normal mass density of a superfluid Fermi gas at unitarity

- Physics
- 2013

We calculate the normal mass density of a paired Fermi gas at unitarity. The dominant contribution near the superfluid transition is from fermionic quasiparticle excitations and is, thus, sensitive…

Resonant scattering effect in spectroscopies of interacting atomic gases

- Physics
- 2010

We consider spectroscopies of strongly interacting atomic gases, and we propose a model for describing the coupling between quasiparticles and gapless phonon-like modes. Our model explains features…

Dynamical properties of ultracold fermions with attractive interactions in an optical lattice

- Physics
- 2012

We study dynamical properties of ultracold fermions with attractive interactions by means of dynamical mean-field theory and a continuous-time quantum Monte Carlo method. By calculating the pair…

Universal Thermodynamics of a Unitary Fermi Gas

- Physics
- 2013

A Fermi gas at the unitarity limit, where the scattering length diverges, is believed to exhibit universal thermodynamics. Recently, it has become possible to derive thermodynamic properties of a…

Review of pseudogaps in strongly interacting Fermi gases.

- Physics, MedicineReports on progress in physics. Physical Society
- 2017

The current experimental and theoretical understanding of the normal state of strongly interacting Fermi gases is reviewed, with particular focus on the phenomonology which is traditionally associated with the pseudogap.

Two-Dimensional Pseudogap Effects of an Ultracold Fermi Gas in the BCS-BEC Crossover Region

- Physics
- 2013

We investigate pseudogap phenomena originating from pairing fluctuations in the BCS-BEC crossover regime of a two-dimensional Fermi gas in a harmonic trap. Including pairing fluctuations within a…

Hartree shift in unitary Fermi gases

- Physics
- 2012

The Hartree energy shift is calculated for a unitary Fermi gas. By including the momentum dependence of the scattering amplitude explicitly, the Hartree energy shift remains finite even at unitarity.…

The pseudogap regime in the unitary Fermi gas

- PhysicsThe European Physical Journal Special Topics
- 2019

We discuss the pseudogap regime in the unitary Fermi gas (UFG), with a particular emphasis on the auxiliary-field quantum Monte Carlo (AFMC) approach. We discuss possible signatures of the pseudogap,…

Precursor of superfluidity in a strongly interacting Fermi gas with negative effective range

- Physics
- 2018

We theoretically investigate the effects of pairing fluctuations in an ultracold Fermi gas near a Feshbach resonance with a negative effective range. By employing a many-body T-matrix theory with a…

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