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Axion inflation, proton decay, and leptogenesis in SU (5) x U(1)(PQ)
KTH, School of Engineering Sciences (SCI), Physics.
Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA..
2018 (English)In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 97, no 7, article id 075012Article in journal (Refereed) Published
Abstract [en]

We implement inflation in a nonsupersymmetric SU(5) model based on a nonminimal coupling of the axion field to gravity. The isocurvature fluctuations are adequately suppressed, axions comprise the dark matter, proton lifetime estimates are of order 8 x 10(34)-3 x 10(35) yr, and the observed baryon asymmetry arises via nonthermal leptogenesis. The presence of low-scale colored scalars ensures unification of the Standard Model gauge couplings and also helps in stabilizing the electroweak vacuum.

Place, publisher, year, edition, pages
American Physical Society, 2018. Vol. 97, no 7, article id 075012
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Physical Sciences
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URN: urn:nbn:se:kth:diva-226760DOI: 10.1103/PhysRevD.97.075012ISI: 000429775500006OAI: oai:DiVA.org:kth-226760DiVA, id: diva2:1203761
Note

QC 20180504

Available from: 2018-05-04 Created: 2018-05-04 Last updated: 2018-05-04Bibliographically approved

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