Gauge theories from principally extended disconnected gauge groups

Bourget, Antoine (Department of Physics, Universidad de Oviedo, C/Federico García Lorca 18, Oviedo, 33007, Spain) ; Pini, Alessandro (DESY Theory Group, Notkestraße 85, Hamburg, 22607, Germany) ; Rodríguez-Gómez, Diego (Department of Physics, Universidad de Oviedo, C/Federico García Lorca 18, Oviedo, 33007, Spain)

11 February 2019

Abstract: We introduce gauge theories based on a class of disconnected gauge groups, called principal extensions. Although in this work we focus on 4d theories with N=2 SUSY, such construction is independent of spacetime dimensions and supersymmetry. These groups implement in a consistent way the discrete gauging of charge conjugation, for arbitrary rank. Focusing on the principal extension of SU(N) , we explain how many of the exact methods for theories with 8 supercharges can be put into practice in that context. We then explore the physical consequences of having a disconnected gauge group: we find that the Coulomb branch is generically non-freely generated, and the global symmetry of the Higgs branch is modified in a non-trivial way.


Published in: Nuclear Physics B 940 (2019) 351-376
Published by: Elsevier
DOI: 10.1016/j.nuclphysb.2019.02.004
License: CC-BY-3.0



Back to search

Fulltext:
Download fulltextXML Download fulltextPDF