Dark monopoles in Grand Unified Theories

Deglmann, Maria (0000 0001 2188 7235, Universidade Federal de Santa Catarina (UFSC), Departamento de Física, CFM, Campus Universitário, Trindade, 88040-900, Florianópolis, Brazil) ; Kneipp, Marco (0000 0001 2188 7235, Universidade Federal de Santa Catarina (UFSC), Departamento de Física, CFM, Campus Universitário, Trindade, 88040-900, Florianópolis, Brazil)

04 January 2019

Abstract: We consider a Yang-Mills-Higgs theory with gauge group G = SU( n ) broken to G v = [SU( p ) × SU( n − p ) × U(1)]/ Z by a Higgs field in the adjoint representation. We obtain monopole solutions whose magnetic field is not in the Cartan Subalgebra. Since their magnetic field vanishes in the direction of the generator of the U(1) em electromagnetic group, we call them Dark Monopoles. These Dark Monopoles must exist in some Grand Unified Theories (GUTs) without the need to introduce a dark sector. We analyze the particular case of SU(5) GUT, where we obtain that their mass is M  = 4 πvẼ ( λ / e 2 )/ e , where Ẽ ( λ / e 2 ) is a monotonically increasing function of λ / e 2 with Ẽ (0) = 1.294 and Ẽ (∞) = 3.262. We also give a geometrical interpretation to their non-abelian magnetic charge.


Published in: JHEP 1901 (2019) 013
Published by: Springer/SISSA
DOI: 10.1007/JHEP01(2019)013
arXiv: 1809.06409
License: CC-BY-4.0



Back to search

Fulltext:
Download fulltextXML Download fulltextPDF (PDFA)