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Listening to the sound of dark sector interactions with gravitational wave standard sirens
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC). Stockholm University, Nordic Institute for Theoretical Physics (Nordita). University of Cambridge, United Kingdom.ORCID iD: 0000-0002-7614-6677
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Number of Authors: 62019 (English)In: Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, E-ISSN 1475-7516, no 7, article id 037Article in journal (Refereed) Published
Abstract [en]

We consider two stable Interacting Dark Matter-Dark Energy models and confront them against current Cosmic Microwave Background data from the Planck satellite. We then generate luminosity distance measurements from O(10(3)) mock Gravitational Wave events matching the expected sensitivity of the proposed Einstein Telescope. We use these to forecast how the addition of Gravitational Wave standard sirens data can improve current limits on the Dark Matter-Dark Energy coupling strength (xi). We find that the addition of Gravitational Waves data can reduce the current uncertainty by a factor of 5. Moreover, if the underlying cosmological model truly features Dark Matter-Dark Energy interactions with a value of xi within the currently allowed 1 sigma upper limit, the addition of Gravitational Wave data would help disentangle such an interaction from the standard case of no interaction at a significance of more than 3 sigma.

Place, publisher, year, edition, pages
2019. no 7, article id 037
Keywords [en]
cosmological simulations, dark energy theory, dark matter theory, gravitational waves / theory
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-171720DOI: 10.1088/1475-7516/2019/07/037ISI: 000476907600001OAI: oai:DiVA.org:su-171720DiVA, id: diva2:1350426
Available from: 2019-09-11 Created: 2019-09-11 Last updated: 2019-09-11Bibliographically approved

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Vagnozzi, Sunny
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Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)Nordic Institute for Theoretical Physics (Nordita)
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