Journal
PHYSICAL REVIEW D
Volume 87, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.87.103530
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Funding
- National Research Foundation
- French state funds
- ANR within the Investissements d'Avenir programme [ANR-11-IDEX-0004-02]
- VACOUL [ANR-2010-BLAN-0510-01]
- THALES [ANR-10-BLAN-0507-01-02]
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A violation of the reciprocity relation, which induces a violation of the distance-duality relation, reflects itself in a change in the normalization of the cosmic microwave spectrum in such a way that its spectrum is grey. We show that existing observational constraints imply that the reciprocity relation cannot be violated by more than 0.01% between decoupling and today. We compare this effect to other sources of violation of the distance-duality relations which induce spectral distortion of the cosmic microwave background spectrum.
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