Comment on "Quantum entangled dark solitons formed by ultracold atoms in optical lattices"

Abstract

We demonstrate that knowledge of two body correlation functions like g2(x) is insufficient to draw conclusions about whether solitons fill in or not in individual experimental runs. In our example, g2 is filled in, while the soliton is not.Comment: 1 page, 1 figure. Comment on R. V. Mishmash and L. D. Carr, Phys. Rev. Lett. 103, 140403 (2009) = arXiv:0710.004