Emergence of a Pseudogap in the BCS-BEC Crossover.,Physical Review Letters

当前位置： X-MOL 学术 › Phys. Rev. Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Emergence of a Pseudogap in the BCS-BEC Crossover.
Physical Review Letters ( IF 8.1 ) Pub Date : 2020-08-04 , DOI: 10.1103/physrevlett.125.060403
Adam Richie-Halford ₁ , Joaquín E Drut ₂ , Aurel Bulgac ₁

Affiliation

Strongly correlated Fermi systems with pairing interactions become superfluid below a critical temperature

T_{c}

. The extent to which such pairing correlations alter the behavior of the liquid at temperatures

T > T_{c}

is a subtle issue that remains an area of debate, in particular regarding the appearance of the so-called pseudogap in the BCS-BEC crossover of unpolarized spin-

1 / 2

nonrelativistic matter. To shed light on this, we extract several quantities of crucial importance at and around the unitary limit, namely, the odd-even staggering of the total energy, the spin susceptibility, the pairing correlation function, the condensate fraction, and the critical temperature