Two-flavor adjoint QCD

Anber, Mohamed M.; Poppitz, Erich

Abstract

We study four-dimensional S U ( 2 ) Yang-Mills theory with two massless adjoint Weyl fermions. When compactified on a spatial circle of size L much smaller than the strong-coupling scale, this theory can be solved by weak-coupling nonperturbative semiclassical methods. We study the possible realizations of symmetries in the R 4 limit and find that all continuous and discrete 0-form and 1-form ’t Hooft anomaly-matching conditions are saturated by a symmetry realization and massless spectrum identical to that found in the small- L limit, with only a single massless flavor-doublet fermion in the infrared. This observation raises the possibility that the class of theories which undergo no phase transition between the analytically solvable small-size circle and strongly coupled infinite-size circle is larger than previously thought and offers new challenges for lattice studies.

Citation

Anber, M. M., & Poppitz, E. (2018). Two-flavor adjoint QCD. Physical Review D, 98(3), Article 034026. https://doi.org/10.1103/physrevd.98.034026

• Journal Article Type: Article
• Online Publication Date: Aug 28, 2018
• Publication Date: Aug 1, 2018
• Deposit Date: Oct 3, 2021
• Publicly Available Date: Oct 5, 2021
• Journal: Physical Review D
• Print ISSN: 2470-0010
• Electronic ISSN: 2470-0029
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 98
• Issue: 3
• Article Number: 034026
• DOI: https://doi.org/10.1103/physrevd.98.034026