Cosmology of the invisible axion

John Preskill, Mark B. Wise, Frank Wilczek

Research output: Contribution to journalArticlepeer-review

2216 Scopus citations


We identify a new cosmological problem for models which solve the strong CP puzzle with an invisible axion, unrelated to the domain wall problem. Because the axion is very weakly coupled, the energy density stored in the oscillations of the classical axion field does not dissipate rapidly; it exceeds the critical density needed to close the universe unless fa ≤ 1012 GeV, where fa is the axion decay constant. If this bound is saturated, axions may comprise the dark matter of the universe.

Original languageEnglish (US)
Pages (from-to)127-132
Number of pages6
JournalPhysics Letters B
Issue number1-3
StatePublished - Jan 6 1983
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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