CMB Anisotropy from Baryogenesis by a Scalar Field

Abstract

We study the cosmic microwave background (CMB) anisotropy in the scenario where the baryon asymmetry of the universe is generated from a condensation of a scalar field. In such a scenario, the scalar condensation may acquire fluctuation during the inflation which becomes a new source of the cosmic density perturbations. In particular, the primordial fluctuation of the scalar condensation may induce correlated mixture of the adiabatic and isocurvature fluctuations. If the scalar condensation decays before it completely dominates the universe, the CMB angular power spectrum may significantly deviate from the conventional adiabatic result. Such a deviation may be observed in the on-going MAP experiment.

14 pages, 3 figures

References in corpus (18)

• A Line of Sight Approach to Cosmic Microwave Background Anisotropies
• Towards the Theory of Reheating After Inflation
• Generating the curvature perturbation without an inflaton
• 4-Year COBE DMR Cosmic Microwave Background Observations: Maps and Basic Results
• Adiabatic CMB perturbations in pre-big bang string cosmology
• Effects of Cosmological Moduli Fields on Cosmic Microwave Background
• Determination of Inflationary Observables by Cosmic Microwave Background Anisotropy Experiments
• D-Term Inflation
• Hybrid Inflation from Supergravity D Terms
• Radical Compression of Cosmic Microwave Background Data
• Leptogenesis with Dirac Neutrinos
• Leptogenesis from $\tilde{N}$-dominated early universe
• Gravitino Production in the Inflationary Universe and the Effects on Big-Bang Nucleosynthesis
• Small Neutrino Masses from Supersymmetry Breaking
• Leptogenesis in Supersymmetric Standard Model with Right-handed Neutrino
• Cosmic Density Perturbations from Late-Decaying Scalar Condensations
• Radiative decay of a massive particle and the non-thermal process in primordial nucleosynthesis
• Low-Scale See-Saw Mechanisms for Light Neutrinos

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• Towards a complete theory of thermal leptogenesis in the SM and MSSM
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• Non-gaussianity and cosmic uncertainty in curvaton-type models
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• Non-Gaussianity from Attractor Curvaton
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• Mixed inflaton and curvaton scenario with sneutrinos
• Extended analysis of CMB constraints on non-Gaussianity in isocurvature perturbations
• Low scale inflation and the immediate heavy curvaton decay
• Right-handed neutrinos as the source of density perturbations
• Constraints from CMB in the intermediate Brans-Dicke inflation
• Hubble induced mass after inflation in spectator field models
• Non-Gaussianity from two right-handed sneutrino curvaton decays
• Expanding, shearing and accelerating isotropic plane symmetric universe with conformal Kasner geometry
• Large non-Gaussianity generated after D-term Inflation by Right-Handed Sneutrino Curvaton
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• Sneutrinos as two inflatons and curvaton and leptogenesis
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