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Gravitational wave production by collisions: more bubbles
journal contribution
posted on 2023-06-07, 20:37 authored by Stephan HuberStephan Huber, Thomas KonstandinWe re-examine the production of gravitational waves by bubble collisions during a first-order phase transition. The spectrum of the gravitational radiation is determined by numerical simulations using the 'envelope approximation'. We find that the spectrum rises as f3.0 for small frequencies and decreases as f-1.0 for high frequencies. Thus, the fall-off at high frequencies is significantly slower than previously stated in the literature. This result has direct impact on detection prospects for gravity waves originating from a strong first-order electroweak phase transition at space-based interferometers, such as LISA and BBO. In addition, we observe a slight dependence of the peak frequency on the bubble wall velocity.
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Publication status
- Published
Journal
Journal of Cosmology and Astroparticle PhysicsISSN
1475-7516External DOI
Issue
9Volume
2008Page range
022Department affiliated with
- Physics and Astronomy Publications
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Article Number: 022Full text available
- No
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- Yes
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2012-02-06Usage metrics
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