1202.5590 (Chi-Chun Chien et al.)

Comment on "Density and Spin response of a strongly-interacting Fermi
gas in the attractive and quasi-repulsive regime"    [PDF]

Chi-Chun Chien, Hao Guo, K. Levin

This is a comment on Phys. Rev. Lett. 108, 080401 (2012) by Palestini et al. We pointed out that the diagrammatic method in that article violates gauge invariance. As a consequence, there will a Meissner effect in the normal phase and the contribution from collective modes are missing in the symmetry-broken phase.

View original: http://arxiv.org/abs/1202.5590