Comment on "Robustness of a Local Fermi Liquid against Ferromagnetism and Phase Separation"

Details Comment on "Robustness of a Local Fermi Liquid against Ferromagnetism and Phase Separation" Comment on "Robustness of a Local Fermi Liquid against Ferromagnetism and Phase Separation"

1998-07-20

arxiv.org/abs/cond-mat/9807276v2

Phys. Rev. Lett. 83, 2865 (1999)

Physics

Condensed Matter

Strongly Correlated Electrons

Shortened Comment-version, submitted to Phys. Rev. Lett.; 1 page, REVTeX

Scientific paper

10.1103/PhysRevLett.83.2865

In this paper we comment on the "Local Fermi Liquid Theory", proposed by Engelbrecht and Bedell [1]. We emphasize several important properties of the limit of infinite dimensions, in particular the k-dependence of the irreducible vertex function, the anisotropy of the Fermi surface and the necessary conditions for phase separation. It appears that these issues have not been fully appreciated in Ref. [1].

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