Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/119126
Title: Universal Landau Pole
Author: Andrianov, Alexander A.
Espriu, D. (Domènec)
Kurkov, Maxim A.
Lizzi, Fedele
Keywords: Gravetat quàntica
Quantum gravity
Issue Date: Jul-2013
Publisher: American Physical Society
Abstract: Our understanding of quantum gravity suggests that at the Planck scale the usual geometry loses its meaning. If so, the quest for grand unification in a large non-Abelian group naturally endowed with the property of asymptotic freedom may also lose its motivation. Instead, we propose a unification of all fundamental interactions at the Planck scale in the form of a universal Landau pole, at which all gauge couplings diverge. The Higgs quartic coupling also diverges while the Yukawa couplings vanish. The unification is achieved with the addition of fermions with vector gauge couplings coming in multiplets and with hypercharges identical to those of the standard model. The presence of these particles also prevents the Higgs quartic coupling from becoming negative, thus avoiding the instability (or metastability) of the standard model vacuum.
Note: Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.111.011601
It is part of: Physical Review Letters, 2013, vol. 111, p. 011601-1-011601-5
Related resource: https://doi.org/10.1103/PhysRevLett.111.011601
URI: http://hdl.handle.net/2445/119126
ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
Articles publicats en revistes (Física Quàntica i Astrofísica)

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