The antiferromagnetic phi4 Model, I. The Mean-field Solution
High Energy Physics - Theory
2009-10-30 v2 Condensed Matter
High Energy Physics - Lattice
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.
Cite
@article{arxiv.hep-th/9612110,
title = {The antiferromagnetic phi4 Model, I. The Mean-field Solution},
author = {V. Branchina and H. Mohrbach and J. Polonyi},
journal= {arXiv preprint arXiv:hep-th/9612110},
year = {2009}
}
Comments
To appear in Phys. Rev. D