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  Gravitational-wave luminosity distance in quantum gravity

Calcagni, G., Kuroyanagi, S., Marsat, S., Sakellariadou, M., Tamanini, N., & Tasinato, G. (2019). Gravitational-wave luminosity distance in quantum gravity. Physics Letters B, 798: 135000. doi:10.1016/j.physletb.2019.135000.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0003-4D88-E Version Permalink: http://hdl.handle.net/21.11116/0000-0004-D7FA-0
Genre: Journal Article

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1904.00384.pdf (Preprint), 222KB
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 Creators:
Calcagni, Gianluca, Author
Kuroyanagi, Sachiko, Author
Marsat, Sylvain, Author
Sakellariadou, Mairi, Author
Tamanini, Nicola1, Author              
Tasinato, Gianmassimo, Author
Affiliations:
1Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc,Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO,High Energy Physics - Theory, hep-th
 Abstract: Dimensional flow, the scale dependence of the dimensionality of spacetime, is a feature shared by many theories of quantum gravity (QG). We present the first study of the consequences of QG dimensional flow for the luminosity distance scaling of gravitational waves in the frequency ranges of LIGO and LISA. We find generic modifications with respect to the standard general-relativistic scaling, largely independent of specific QG proposals. We constrain these effects using two examples of multimessenger standard sirens, the binary neutron-star merger GW170817 and a simulated supermassive black-hole merger event detectable with LISA. We apply these constraints to various QG candidates, finding that the quantum geometries of group field theory, spin foams and loop quantum gravity can give rise to observable signals in the gravitational-wave spin-2 sector. Our results complement and improve GW propagation-speed bounds on modified dispersion relations. Under more model-dependent assumptions, we also show that bounds on quantum geometry can be strengthened by solar-system tests.

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 Dates: 2019-03-312019
 Publication Status: Published in print
 Pages: 6 pages, 1 figure
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 Rev. Method: -
 Identifiers: arXiv: 1904.00384
URI: http://arxiv.org/abs/1904.00384
DOI: 10.1016/j.physletb.2019.135000
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Title: Physics Letters B
Source Genre: Journal
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Pages: - Volume / Issue: 798 Sequence Number: 135000 Start / End Page: - Identifier: -