Large-scale anomalies of the CMB in the curvaton scenario

Abstract

We extend the curvaton scenario presented by Erickcek et al. (2008, 2009), to explain how the even-odd multipole asymmetry of the Cosmic Microwave Background (CMB) (also called parity asymmetry, (Kim & Naselsky 2010)) and power anisotropies can be generated by the curvaton field, which acts as an extra component to the spectrum of adiabatic perturbations in the inflationary epoch. Our work provides a possible cosmic explanation to the CMB large-scale asymmetry problems besides systematics and unknown residuals.

13 pages, 27 figures

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Cited by in corpus (12)

• Planck CMB Anomalies: Astrophysical and Cosmological Secondary Effects and the Curse of Masking
• Directional dependence of CMB parity asymmetry
• Combining states without scale hierarchies with ordered parton showers
• On Preferred Axes in WMAP Cosmic Microwave Background Data after Subtraction of the Integrated Sachs-Wolfe Effect
• Constraining the anisotropy of the Universe with the X-ray and UV fluxes of quasars
• Coupling structure of multi-field primordial perturbations
• Cosmology with moving bimetric fluids
• Finsler space-time can explain both parity asymmetry and power deficit seen in CMB temperature anisotropies
• Large Scale Anomalies in the Microwave Background: Causation and Correlation
• Studies of Quantum Chromodynamics at the LHC
• Reconstruction of Missing Data using Iterative Harmonic Expansion
• Nearly Full-Sky Low-Multipole Cosmic Microwave Background Temperature Anisotropy: III. CMB Temperature Anomalies