GUT inflation and proton decay after WMAP5 data

Journal Article · Mon Dec 15 00:00:00 EST 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.78.123516· OSTI ID:21251105

Rehman, Mansoor Ur; Shafi, Qaisar; Wickman, Joshua R ^[1]

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1. Bartol Research Institute, Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716 (United States)

We employ Coleman-Weinberg and Higgs potentials to implement inflation in nonsupersymmetric grand unified theories (GUTs) such as SU(5) and SO(10). To realize a scalar spectral index close to 0.96, as indicated by the most recent WMAP 5-year analysis, the energy scale of observable inflation turns out to be of order 10{sup 16} GeV. This implies a GUT symmetry breaking scale of similar magnitude and proton lifetime of order 10{sup 34}-10{sup 38} years. In some SO(10) models with axion dark matter, the scalar leptoquark boson exchange leads to proton decay with a lifetime of order 10{sup 34}-10{sup 35} years.

• OSTI ID: 21251105
• Journal Information: Physical Review. D, Particles Fields, Vol. 78, Issue 12; Other Information: DOI: 10.1103/PhysRevD.78.123516; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AXIONS
BOSON-EXCHANGE MODELS
DATA ANALYSIS
EEV RANGE
GRAND UNIFIED THEORY
HIGGS BOSONS
HIGGS MODEL
INFLATION
LIFETIME
NONLUMINOUS MATTER
PARTICLE DECAY
POTENTIALS
PROTONS
SIMULATION
SO-10 GROUPS
SU-5 GROUPS
SYMMETRY BREAKING