Relic gravitational waves and extended inflation
In extended inflation, a new version of inflation where the transition from the false-vacuum phase to a radiation-dominated Universe is accomplished by bubble nucleation and percolation, bubble collisions supply a potent-and potentially detectable-source of gravitational waves. The present energy density in relic gravity waves from bubble collisions is expected to be about 10(exp -5) of closure density-many orders of magnitude greater than that of the gravity waves produced by quantum fluctuations. Their characteristic wavelength depends upon the reheating temperature T(sub RH): lambda is approximately 10(exp 4) cm (10(exp 14) GeV/T(sub RH)). If large numbers of black holes are produced, a not implausible outcome, they will evaporate producing comparable amounts of shorter wavelength waves, lambda is approximately 10(exp -6) cm (T(sub RH)/10(exp 14) GeV).
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- OSTI ID:
- 6139408
- Report Number(s):
- N-90-29740; NASA-CR-186469; NAS-1.26:186469; FERMILAB-PUB-90/178-A; CNN: NAGW-1340; TRN: 91-001974
- Country of Publication:
- United States
- Language:
- English
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