Comment on "Single-particle Green functions in exactly solvable models of Bose and Fermi liquids"

It is shown that the construction introduced recently by Setlur and Chang [Phys. Rev. B 57, 15 144 (1998)] for generalized Fermi sea-displacement operators contains undefined elements, which may lead to divergencies, and, in fact, these operators are not bosonic operators, in contrast to what these authors claim. [S0163-1829(99)05335-7].