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JOURNALS // Symmetry, Integrability and Geometry: Methods and Applications // Archive

SIGMA, 2021 Volume 17, 064, 20 pp. (Mi sigma1746)

Generalized Gross–Neveu Universality Class with Non-Abelian Symmetry

John A. Gracey

Theoretical Physics Division, Department of Mathematical Sciences, University of Liverpool, P.O. Box 147, Liverpool, L69 3BX, UK

Abstract: We use the large $N$ critical point formalism to compute $d$-dimensional critical exponents at several orders in $1/N$ in an Ising Gross–Neveu universality class where the core interaction includes a Lie group generator. Specifying a particular symmetry group or taking the abelian limit of the final exponents recovers known results but also provides expressions for any Lie group or fermion representation.

Keywords: critical exponents, large $N$ expansion, renormalization.

MSC: 81T17, 81T18, 81V25, 82B27

Received: February 26, 2021; in final form June 18, 2021; Published online June 29, 2021

Language: English

DOI: 10.3842/SIGMA.2021.064



Bibliographic databases:
ArXiv: 2102.12767


© Steklov Math. Inst. of RAS, 2024