Phases of a strongly coupled four-fermion theory
High Energy Physics - Lattice
2018-03-30 v1 Strongly Correlated Electrons
Abstract
We present ongoing investigations of a four-dimensional lattice field theory with four massless reduced staggered fermions coupled through an SU(4)-invariant four-fermion interaction. As in previous studies of four-fermion and Higgs--Yukawa models with different lattice fermion discretizations, we observe a strong-coupling phase in which the system develops a mass gap without breaking any lattice symmetry. This symmetric strong-coupling phase is separated from the symmetric weak-coupling phase by a narrow region of four-fermi coupling in which the system exhibits long-range correlations.
Keywords
Cite
@article{arxiv.1710.08137,
title = {Phases of a strongly coupled four-fermion theory},
author = {David Schaich and Simon Catterall},
journal= {arXiv preprint arXiv:1710.08137},
year = {2018}
}
Comments
Contribution to the proceedings of Lattice 2017, June 18--24, Granada, Spain