The pseudogap regime in the unitary Fermi gas

Abstract

We discuss the pseudogap regime in the cold atomic unitary Fermi gas, with a particular emphasis on the auxiliary-field quantum Monte Carlo (AFMC) approach. We discuss possible signatures of the pseudogap, review experimental results, and survey analytic and quantum Monte Carlo techniques before focusing on AFMC calculations in the canonical ensemble. For the latter method, we discuss results for the heat capacity, energy-staggering pairing gap, spin susceptibility, and compare to experiment and other theoretical methods.

arXiv comment19 pages, 14 figures, review in a special issue of the European Journal of Physics: Special Topics, dedicated to the conference on Frontiers of Quantum and Mesoscopic Thermodynamics (FQMT'17)

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Cited by in corpus (18)

• Complex Langevin and other approaches to the sign problem in quantum many-body physics
• Tunneling transport of unitary fermions across the superfluid transition
• The contact in the unitary Fermi gas across the superfluid phase transition
• Emergence of a pseudogap in the BCS-BEC crossover
• Reaching the continuum limit in finite-temperature ab initio field-theory computations in many-fermion systems
• Pairing and the spin susceptibility of the polarized unitary Fermi gas in the normal phase
• Mesoscopic spin transport between strongly interacting Fermi gases
• Superfluid Phase Transitions and Effects of Thermal Pairing Fluctuations in Asymmetric Nuclear Matter
• Spin Susceptibility Above the Superfluid Onset in Ultracold Fermi Gases
• Evolution of an attractive polarized Fermi gas: From a Fermi liquid of polarons to a non-Fermi liquid at the Fulde-Ferrell-Larkin-Ovchinnikov quantum critical point
• Coexistence phase of ${}^1{S}_0$ and ${}^3{P}_2$ superfluids in neutron stars
• Fourth- and fifth-order virial expansion of harmonically trapped fermions at unitarity
• BCS-BEC Crossover Effects and Pseudogap in Neutron Matter
• Low-Dimensional Fluctuations and Pseudogap in Gaudin-Yang Fermi Gases
• Strong-coupling effects of pairing fluctuations, and Anderson-Bogoliubov mode in neutron ${}^1$S${}_0$ superfluids in neutron stars
• Nambu-Covariant Many-Body Theory II: Self-Consistent Approximations
• Spin-dipole mode in a trapped Fermi gas near unitarity
• A lattice pairing-field approach to ultracold Fermi gases