Cosmological constraints on very dark photons

Anthony Fradette, Maxim Pospelov, Josef Pradler, Adam Ritz

Research output: Contribution to journalArticlepeer-review

100 Scopus citations


We explore the cosmological consequences of kinetically mixed dark photons with a mass between 1 MeV and 10 GeV and an effective electromagnetic fine structure constant as small as 10-38. We calculate the freeze-in abundance of these dark photons in the early universe and explore the impact of late decays on big bang nucleosynthesis and the cosmic microwave background. This leads to new constraints on the parameter space of mass mV vs kinetic mixing parameter κ.

Original languageEnglish (US)
Article number035022
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number3
StatePublished - Aug 25 2014
Externally publishedYes


Dive into the research topics of 'Cosmological constraints on very dark photons'. Together they form a unique fingerprint.

Cite this