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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.
Received: February 26, 2021; in final form June 18, 2021; Published online June 29, 2021
Citation:
John A. Gracey, “Generalized Gross–Neveu Universality Class with Non-Abelian Symmetry”, SIGMA, 17 (2021), 064, 20 pp.
Linking options:
https://www.mathnet.ru/eng/sigma1746 https://www.mathnet.ru/eng/sigma/v17/p64
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Abstract page: | 66 | Full-text PDF : | 17 | References: | 18 |
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