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  Gravitational wave stochastic background from cosmological particle decay

Allen, B. (2020). Gravitational wave stochastic background from cosmological particle decay. Physical Review Research, 2: 012034. doi:10.1103/PhysRevResearch.2.012034.

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1910.08213.pdf (Preprint), 312KB
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 Creators:
Allen, Bruce1, Author           
Affiliations:
1Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc,Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO, Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE
 Abstract: We assume that cosmological dark matter is composed of massive neutral scalar
particles that decay into two massless particles. The decay produces a
stochastic background of gravitational waves because of the "memory effect". We
calculate the spectrum of this background and discuss its potential
observability. Penrose has proposed a cosmological model for which these
particles have the Planck mass and decay into two gravitons [arXiv:1707.04169].
For these, the spectrum has an additional "direct" contribution from the decay
products, which we also estimate and discuss.

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 Dates: 2019-10-172020
 Publication Status: Issued
 Pages: 4 pages, 1 figure
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 Table of Contents: -
 Rev. Type: -
 Degree: -

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Title: Physical Review Research
Source Genre: Journal
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Publ. Info: College Park, Maryland, United States : American Physical Society (APS)
Pages: - Volume / Issue: 2 Sequence Number: 012034 Start / End Page: - Identifier: ISSN: 2643-1564
CoNE: https://pure.mpg.de/cone/journals/resource/2643-1564