Phases of a strongly coupled four-fermion theory

Schaich, David Alexander; Catterall, Simon; Della Morte, M.; Fritzsch, P.; Gámiz Sánchez, E.; Pena Ruano, C. (26 March 2018). Phases of a strongly coupled four-fermion theory. EPJ web of conferences, 175, 03004. EDP Sciences 10.1051/epjconf/201817503004

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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.

Item Type:

Conference or Workshop Item (Paper)

Division/Institute:

08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Schaich, David Alexander

Subjects:

500 Science > 530 Physics

ISSN:

2100-014X

Publisher:

EDP Sciences

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

14 May 2018 15:20

Last Modified:

24 Oct 2019 05:48

Publisher DOI:

10.1051/epjconf/201817503004

ArXiv ID:

1710.08137

BORIS DOI:

10.7892/boris.116475

URI:

https://boris.unibe.ch/id/eprint/116475

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