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arXiv · hep-th/9612110

The antiferromagnetic phi4 Model, I. The Mean-field Solution

V. Branchina·H. Mohrbach·J. Polonyi
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Abstract

Certain higher dimensional operators of the lagrangian may render the vacuum inhomogeneous. A rather rich phase structure of the phi4 scalar model in four dimensions is presented by means of the mean-field approximation. One finds para- ferro- ferri- and antiferromagnetic phases and commensurate-incommensurate transitions. There are several particles described by the same quantum field in a manner similar to the species doubling of the lattice fermions. It is pointed out that chiral bosons can be introduced in the lattice regularized theory.

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V. Branchina, H. Mohrbach, J. Polonyi. 1999-05-11. The antiferromagnetic phi4 Model, I. The Mean-field Solution. https://doi.org/10.1103/physrevd.60.045006

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