F-term hybrid inflation followed by a Peccei-Quinn phase transition

Journal Article · Wed Sep 15 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.063535· OSTI ID:21421142

Lazarides, G ^[1]; Pallis, C ^[2]

---

1. Physics Division, School of Technology, Aristotle University of Thessaloniki, Thessaloniki 54124 (Greece)
2. Department of Physics, University of Cyprus, P.O. Box 20537, Nicosia 1678 (Cyprus)

We consider a cosmological setup, based on renormalizable superpotential terms, in which a superheavy scale F-term hybrid inflation is followed by a Peccei-Quinn phase transition, resolving the strong CP and {mu} problems of the minimal supersymmetric standard model. We show that the field which triggers the Peccei-Quinn phase transition can remain after inflation well above the Peccei-Quinn scale thanks to (i) its participation in the supergravity and logarithmic corrections during the inflationary stage and (ii) the high reheat temperature after the same period. As a consequence, its presence influences drastically the inflationary dynamics and the universe suffers a second period of reheating after the Peccei-Quinn phase transition. Confronting our inflationary predictions with the current observational data, we find that, for about the central value of the spectral index, the grand unification scale can be identified with its supersymmetric value for the relevant coupling constant {kappa}{approx_equal}0.002 and, more or less, natural values, {+-}(0.01-0.1), for the remaining parameters. On the other hand, the final reheat temperature after the Peccei-Quinn phase transition turns out to be low enough so as the gravitino problem is avoided.

• OSTI ID: 21421142
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 6; Other Information: DOI: 10.1103/PhysRevD.82.063535; (c) 2010 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
CORRECTIONS
COUPLING CONSTANTS
CP INVARIANCE
FORECASTING
GRAVITATION
INFLATIONARY UNIVERSE
PHASE TRANSFORMATIONS
STANDARD MODEL
SUPERGRAVITY
SUPERSYMMETRY
UNIVERSE
COSMOLOGICAL MODELS
FIELD THEORIES
GRAND UNIFIED THEORY
INVARIANCE PRINCIPLES
MATHEMATICAL MODELS
PARTICLE MODELS
QUANTUM FIELD THEORY
SYMMETRY
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES