Virial expansion is widely used in cold atoms to analyze high temperature strongly correlated many-body systems. As the n-th order virial expansion coefficient can be accurately obtained by exactly solving up to n-body problems, the virial expansion offers a few-body approach to study strongly correlated many-body problems. In particular, the virial expansion has successfully been applied to unitary Fermi gas. We review recent progress of the virial expansion studies in the unitary Fermi gas, in particular the fourth order virial coefficient.
Cited by 2
Rammelmüller et al., Pairing and the spin susceptibility of the polarized unitary Fermi gas in the normal phase
Phys. Rev. A 103, 043330 (2021) [Crossref]
Tokieda et al., Equivalence of Dissipative and Dissipationless Dynamics of Interacting Quantum Systems With Its Application to the Unitary Fermi Gas
Front. Phys. 9, 730761 (2021) [Crossref]