Document type
ArticleVersion
Published versionPublication date
Publication license
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/174988
Phases of unitary matrix models and lattice QCD2
Journal Title
Authors
Director/Tutor
Journal ISSN
Volume Title
Related resource
Abstract
We investigate the different large N phases of a generalized Gross-Witten-Wadia (GWW) U(N) matrix model. The deformation mimics the one-loop determinant of fermion matter with a particular coupling to gauge fields. In one version of the model, the GWW phase transition is smoothed out and it becomes a crossover. In another version, the phase transition occurs along a critical line in the two-dimensional parameter space spanned by the 't Hooft coupling λ and the Veneziano parameter τ. We compute the expectation value of Wilson loops in both phases, showing that the transition is third order. A calculation of the β function shows the existence of an IR stable fixed point.
Subject (English)
Citation
Citation
RUSSO, J. G. (Jorge Guillermo). Phases of unitary matrix models and lattice QCD2. Physical Review D. 2020. Vol. 102, num. 10, pags. 105019. ISSN 1550-7998. [consulted: 14 of June of 2026]. Available at: https://hdl.handle.net/2445/174988