Wilson Fermions with Four Fermion Interactions
Abstract
We present a lattice study of a four fermion theory, known as Nambu Jona-Lasinio (NJL) theory, via Wilson fermions. Four fermion interactions naturally occur in several extensions of the Standard Model as a low energy parameterisation of a more fundamental theory. In models of dynamical electroweak symmetry breaking these operators, at an effective level, are used to endow the Standard Model fermions with masses. Furthermore these operators, when sufficiently strong, can drastically modify the fundamental composite dynamics by, for example, turning a strongly coupled infrared conformal theory into a (near) conformal one with desirable features for model building. As first step, we study spontaneous chiral symmetry breaking for the lattice version of the NJL model.
Keywords
Cite
@article{arxiv.1511.03899,
title = {Wilson Fermions with Four Fermion Interactions},
author = {Jarno Rantaharju and Vincent Drach and Ari Hietanen and Claudio Pica and Francesco Sannino},
journal= {arXiv preprint arXiv:1511.03899},
year = {2017}
}
Comments
Contribution to proceedings of the 33rd International Symposium on Lattice Field Theory (Lattice 2015), 14-18 July 2015, Kobe, Japan