Naslov
Untangling scaling dimensions of fixed charge operators in Higgs theories

Autori
Antipin, Oleg ; Bersini, Jahmall ; Sannino, Francesco ; Wang, Zhi-Wei ; Zhang, Chen

Izvornik
Physical review. D (2470-0010) 103 (2022), 12; 125024, 32

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
critical exponents ; mathematica application ; beta-function ; lie-algebras ; renormalization ; dynamics ; models

Sažetak
We go beyond a systematic review of the semiclassical approaches for determining the scaling dimensions of fixed-charge operators in U(1) and O(N) models by introducing a general strategy apt at determining the relation between a given charge configuration and the associated operators for more involved symmetry groups such as the U(N) × U(M). We show how, varying the charge configuration, it is possible to access anomalous dimensions of different operators transforming according to a variety of irreducible representations of the non-Abelian symmetry group without the aid of diagrammatical computations. We illustrate our computational strategy by determining the anomalous dimensions of several composite operators to the next-to-leading order in the semiclassical expansion for the U(N) × U(M) conformal field theory (CFT) in 4 − ϵ dimensions. Thanks to the powerful interplay between semiclassical methods and group theory we can, for the first time, extract scaling dimensions for a wide range of operators.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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