Relic gravitational waves and extended inflation

Michael S. Turner, Frank Wilczek

Research output: Contribution to journalArticlepeer-review

144 Scopus citations


In extended inflation, a new version of inflation where the transition from an inflationary to a radiation-dominated Universe is accomplished by bubble nucleation, bubble collisions supply a potent and potentially detectable source of gravitational waves. The energy density in relic gravitons from bubble collisions is expected to be about 10-5 of closure density. Their characteristic wavelength depends upon the reheating temperature TRH: (104 cm)[(1014 GeV)/TRH]. If black holes are produced by bubble collisions, they will evaporate producing shorter-wavelength gravitons.

Original languageEnglish (US)
Pages (from-to)3080-3083
Number of pages4
JournalPhysical Review Letters
Issue number25
StatePublished - 1990
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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