Constraints on supersymmetric grand unified theories from cosmology

2004/06/30 by Jonathan Rocher, Mairi Sakellariadou · 79 citations
Physics and Astronomy · #Anisotropy #Astrophysics #Black Holes and Theoretical Physics #CMB cold spot #Context (archaeology) #Cosmic background radiation #Cosmic microwave background #Cosmic string #Cosmology #Cosmology and Gravitation Theories #Grand Unified Theory #Gravitino #Inflation (cosmology) #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Supergravity #Superpotential #Supersymmetry #Theoretical physics #astro-ph #gr-qc #hep-ph #hep-th

paper · pdf · doi:10.1088/1475-7516/2005/03/004

published in Journal of Cosmology and Astroparticle Physics 2005(03), 004 (Institute of Physics) · 32 pages, 7 figures. To match published version

openalex publication_date 2005/03/15 · arxiv created 2005/03/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Within the context of SUSY GUTs, cosmic strings are generically formed at the end of hybrid inflation. However, the WMAP CMB measurements strongly constrain the possible cosmic strings contribution to the angular power spectrum of anisotropies. We investigate the parameter space of SUSY hybrid (F- and D-term) inflation, to get the conditions under which theoretical predictions are in agreement with data. The predictions of F-term inflation are in agreement with data only if the superpotential coupling κ is small. In particular, for SUSY SO (10), the upper bound is . This fine tuning problem can be lifted if we employ the curvaton mechanism, in which case ; higher values are not allowed by the gravitino constraint. The constraint on κ is equivalent to a constraint on the SSB mass scale M , namely GeV. The study of D-term inflation shows that the inflaton field is of the order of the Planck scale; one should therefore consider SUGRA. We find that the cosmic strings contribution to the CMB anisotropies is not constant, but it is strongly dependent on the gauge coupling g and on the superpotential coupling λ. We obtain and . SUGRA corrections also induce a lower limit for λ. Equivalently, the Fayet–Iliopoulos term ξ must satisfy GeV. This constraint holds for all allowed values of g .

Citations

• Inflation and monopoles in supersymmetric SU(4)c × SU(2)L × SU(2)R
• Genericity of Cosmic Strings Formation in SUSY GUTs
• Generating the curvature perturbation without an inflaton
• Observational constraints on cosmic strings: Bayesian analysis in a three-dimensional parameter space
• N = 1 supersymmetric cosmic strings
• Multiple Peaks in the Angular Power Spectrum of the Cosmic Microwave Background: Significance and Consequences for Cosmology
• Fayet-Iliopoulos terms in string theory
• Cosmic string from D-term inflation and curvaton
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Preliminary Maps and Basic Results
• GUT scale inflation, non-thermal leptogenesis, and atmospheric neutrino oscillations
• Particle Physics Models of Inflation and the Cosmological Density Perturbation
• Measurement of the Rate ofνe+d→p+p+e−Interactions Produced byB<mml:mprescripts/>8Solar Neutrinos at the Sudbury Neutrino Observatory
• Topology of cosmic domains and strings
• Radiative Corrections as the Origin of Spontaneous Symmetry Breaking
• Measurements of the Solar Neutrino Flux from Super-Kamiokande's First 300 Days
• Nonvacuum initial states for cosmological perturbations of quantum-mechanical origin

Cited by

• Single field inflation in supergravity with a U(1) gauge symmetry
• GUT Physics in the Era of the LHC