Critical behavior of the correlation function of three-dimensional O(N) models in the symmetric phase

Abstract

We present new strong-coupling series for O(N) spin models in three dimensions, on the cubic and diamond lattices. We analyze these series to investigate the two-point Green's function G(x) in the critical region of the symmetric phase. This analysis shows that the low-momentum behavior of G(x) is essentially Gaussian for all N from zero to infinity. This result is also supported by a large-N analysis.

3 pages, requires espcrc2.sty

References in corpus (1)

• Strong-coupling expansion of lattice O(N) sigma models

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