Comment on "influence of induced interactions on superfluid properties of quasi-two-dimensional dilute Fermi gases with spin-orbit coupling"

Abstract

In an article in 2013, Caldas et al. [Phys. Rev. A 88, 023615 (2013)PLRAAN1050-294710.1103/PhysRevA.88.023615] derived analytical expressions of the induced interaction within the Gorkov-Melik-Barkhudarov correction in quasi-two-dimensional Fermi gases with Rashba spin-orbit coupling (SOC). They claimed that the induced interaction is exactly the same as the one for the case without SOC when the SOC is weak, and in the region of strong SOC, it starts from a reduced value and then recovers the value for the zero SOC in the limit of large SOC. We point out that their calculations contain critical errors and inconsistencies that significantly affect the basis of these claims. © 2016 American Physical Society.