Antiferromagnetic 4-d O(4) Model

Details Antiferromagnetic 4-d O(4) Model Antiferromagnetic 4-d O(4) Model

1996-06-26

arxiv.org/abs/hep-lat/9606017v2

Phys.Rev. D55 (1997) 2965-2973

Physics

High Energy Physics

High Energy Physics - Lattice

26 pages LaTeX2e, 7 figures. The possibility of logarithmic corrections has been considered, new figures and tables added. Acc

Scientific paper

10.1103/PhysRevD.55.2965

We study the phase diagram of the four dimensional O(4) model with first (beta1) and second (beta2) neighbor couplings, specially in the beta2 < 0 region, where we find a line of transitions which seems to be second order. We also compute the critical exponents on this line at the point beta1 =0 (F4 lattice) by Finite Size Scaling techniques up to a lattice size of 24, being these exponents different from the Mean Field ones.

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