On the vertex corrections in antiferromagnetic spin fluctuation theories

Details On the vertex corrections in antiferromagnetic spin fluctuation theories On the vertex corrections in antiferromagnetic spin fluctuation theories

1997-01-22

arxiv.org/abs/cond-mat/9701169v1

Physics

Condensed Matter

Strongly Correlated Electrons

3 pages, Revtex, 1 figure, ps-file also available at http://lifshitz.physics.wisc.edu/www/morr/morr_homepage.html

Scientific paper

10.1103/PhysRevB.56.7789

We argue that recent calculations by Amin and Stamp (PRL 77, 301
(1996); cond-mat/9601086) overestimate the strength of the vertex corrections
in the spin-fermion model for cuprates. We clarify the physical origin of the
apparent discrepancy between their results and earlier calculations. We also
comment on the relative sign of the vertex correction.

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