Year: 1990
Type: article
Abstract: 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 ${10}^{\mathrm{\ensuremath{-}}5}$ of closure density. Their characteristic wavelength depends upon the reheating temperature ${\mathit{T}}_{\mathrm{R}\mathrm{H}:}$ \ensuremath{\lambda}\ensuremath{\sim}(${10}^{4}$ cm)[(${10}^{14}$ GeV)/${\mathit{T}}_{\mathrm{RH}}$]. If black holes are produced by bubble collisions, they will evaporate producing shorter-wavelength gravitons.
Source: Physical Review Letters
Authors: Michael S. Turner, Frank Wilczek
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: U.S. Department of Energy, Fermilab
OpenAlex ID: W2044120942