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Cited by 278

The DOI matches its Crossref record; 69 of the 69 references it cites were found in a registry or an index.

Gravitational wave background from reheating after hybrid inflation

Open access
García-Bellido, Juan, Figueroa, Daniel G., Sastre, Alfonso·2008·Physical Review D
DOI 10.1103/physrevd.77.043517
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Abstract

The reheating of the Universe after hybrid inflation proceeds through the nucleation and subsequent collision of large concentrations of energy density in the form of bubblelike structures moving at relativistic speeds. This generates a significant fraction of energy in the form of a stochastic background of gravitational waves, whose time evolution is determined by the successive stages of reheating: First, tachyonic preheating makes the amplitude of gravity waves grow exponentially fast. Second, bubble collisions add a new burst of gravitational radiation. Third, turbulent motions finally sets the end of gravitational waves production. From then on, these waves propagate unimpeded to us. We find that the fraction of energy density today in these primordial gravitational waves could be significant for grand unified theory (GUT)-scale models of inflation, although well beyond the frequency range sensitivity of gravitational wave observatories like LIGO, LISA, or BBO. However, low-scale models could still produce a detectable signal at frequencies accessible to BBO or DECIGO. For comparison, we have also computed the analogous gravitational wave background from some chaotic inflation models and obtained results similar to those found by other groups. The discovery of such a background would open a new observational window into the very early universe, where the details of the process of reheating, i.e. the big bang, could be explored. Moreover, it could also serve in the future as a new experimental tool for testing the inflationary paradigm.

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Metadata

Authors
García-Bellido, J., Figueroa, D. G., & Sastre, A.
Venue
Physical Review D
Publisher
American Physical Society (APS)
Published
2008-02-15
Volume
77
Issue
4
ISSN
  • 0556-2821 (ISSN-L)
  • 1550-7998
  • 1550-2368
DOI
10.1103/physrevd.77.043517
OpenAlex
W2072751707
Cited by
278
References
69
FWCI
12.97
Type
journal article
Language
en
Open access
green

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