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arXiv · 1309.4454

Spectral Distortion in a Radially Inhomogeneous Cosmology

R. R. Caldwell·N. A. Maksimova
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Abstract

The spectral distortion of the cosmic microwave background blackbody spectrum in a radially inhomogeneous spacetime, designed to exactly reproduce a LambdaCDM expansion history along the past light cone, is shown to exceed the upper bound established by COBE-FIRAS by a factor of approximately 3700. This simple observational test helps uncover a slew of pathological features that lie hidden inside the past light cone, including a radially contracting phase at decoupling and, if followed to its logical extreme, a naked singularity at the radially inhomogeneous Big Bang.

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R. R. Caldwell, N. A. Maksimova. 2013-10-15. Spectral Distortion in a Radially Inhomogeneous Cosmology. https://doi.org/10.1103/physrevd.88.103502

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