Constraining Axion Inflation with Gravitational Waves across 29 Decades in Frequency

We demonstrate that gravitational waves generated by efficient gauge preheating after axion inflation generically contribute significantly to the effective number of relativistic degrees of freedom N_{eff}. We show that, with existing Planck limits, gravitational waves from preheating already place...

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Veröffentlicht in:	Physical review letters 2020-05, Vol.124 (17), p.171301-171301, Article 171301
Hauptverfasser:	Adshead, Peter, Giblin, John T, Pieroni, Mauro, Weiner, Zachary J
Format:	Artikel
Sprache:	eng
Schlagworte:	ASTRONOMY AND ASTROPHYSICS Physics
Online-Zugang:	Volltext
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