Phases of a strongly coupled four-fermion theory

David Schaich, Simon Catterall

Research output: Contribution to journalConference Articlepeer-review

14 Scopus citations


We present ongoing investigations of a four-dimensional lattice field theory with four massless reduced staggered fermions coupled through an SU(4)-invariant fourfermion 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.

Original languageEnglish (US)
Article number03004
JournalEPJ Web of Conferences
StatePublished - Mar 26 2018
Event35th International Symposium on Lattice Field Theory, Lattice 2017 - Granada, Spain
Duration: Jun 18 2017Jun 24 2017

ASJC Scopus subject areas

  • General Physics and Astronomy


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