Cosmic Birefringence Test of the Hubble Tension

An early dark energy component consisting of a cosmic pseudo Nambu-Goldstone boson has been recently proposed to resolve the Hubble tension -- the four-sigma discrepancy between precision measurements of the expansion rate of the universe. Here we point out that such an axion-like component may be e...

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Veröffentlicht in:	arXiv.org 2019-09
Hauptverfasser:	Capparelli, Ludovico M, Caldwell, Robert R, Melchiorri, Alessandro
Format:	Artikel
Sprache:	eng
Schlagworte:	Anisotropy Big Bang theory Birefringence Cosmic microwave background Dark energy Electromagnetism Physics - Cosmology and Nongalactic Astrophysics Physics - General Relativity and Quantum Cosmology Physics - High Energy Physics - Phenomenology Physics - High Energy Physics - Theory
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