Four-Loop Perturbative Expansion for the Lattice $N$-Vector Model

Details Four-Loop Perturbative Expansion for the Lattice $N$-Vector Model Four-Loop Perturbative Expansion for the Lattice $N$-Vector Model

1995-10-06

arxiv.org/abs/hep-lat/9510015v2

Nucl.Phys. B455 (1995) 619-647

Physics

High Energy Physics

High Energy Physics - Lattice

29 pages, to appear in Nucl. Phys. B, latex, subeqnar, epsf styles needed, one figure, available also as postscript at http:

Scientific paper

10.1016/0550-3213(95)00438-X

We compute the four-loop contributions to the $\beta$-function and the
anomalous dimension of the field for the $O(N)$-invariant $N$-vector model.
These results are used to compute the second analytic corrections to the
correlation length and the general spin-$n$ susceptibility.

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