Gravitational Waves from Collapsing Vacuum Domains

Details Gravitational Waves from Collapsing Vacuum Domains Gravitational Waves from Collapsing Vacuum Domains

1998-07-24

arxiv.org/abs/astro-ph/9807260v2

Phys.Rev.Lett. 81 (1998) 5497-5500

Astronomy and Astrophysics

Astrophysics

Revised version to appear in Physical Review Letters. Changes have been made which improve the presentation of the results. Fi

Scientific paper

10.1103/PhysRevLett.81.5497

The breaking of an approximate discrete symmetry, the final stages of a first order phase transition, or a post-inflationary biased probability distribution for scalar fields are possible cosmological scenarios characterized by the presence of unstable domain wall networks. Combining analytical and numerical techniques, we show that the non-spherical collapse of these domains can be a powerful source of gravitational waves. We compute their contribution to the stochastic background of gravitational radiation and explore their observability by present and future gravitational wave detectors.

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