DOI 10.1007/s100520000484
Bosons doubling
H. Mohrbach1 - A. Bérard1 - P. Gosselin2
1 L.P.L.I. Institut de Physique, 1 blvd D.Arago, 57070 Metz, France
2 Université Grenoble I, Institut Fourier, UMR
5582 CNRS-UJF, UFR de Mathématiques, BP74, 38402 Saint
Martin d'Hères, Cedex, France
Received: 26 June 2000 / Published online: 31 August 2000 - © Springer-Verlag 2000
Abstract
It is shown that next-nearest-neighbor interactions may lead to unusual
paramagnetic or ferromagnetic phases which physical content is radically
different from the standard phases. Actually there are several particles
described by the same quantum field in a manner similar to the species
doubling of the lattice fermions. The renormalizability of the theory is
proven at the one loop level.
Copyright Società Italiana di Fisica, Springer-Verlag 2000
