Prospect for constraining holographic dark energy with gravitational wave standard sirens from the Einstein Telescope

We study the holographic dark energy (HDE) model by using the future gravitational wave (GW) standard siren data observed from the Einstein Telescope (ET) in this work. We simulate 1000 GW standard siren data based on a 10-year observation of the ET to make this analysis. We find that all the cosmol...

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Bibliographic Details
Published in:	The European physical journal. C, Particles and fields Particles and fields, 2020-03, Vol.80 (3), p.1-14, Article 217
Main Authors:	Zhang, Jing-Fei, Dong, Hong-Yan, Qi, Jing-Zhao, Zhang, Xin
Format:	Article
Language:	eng
Subjects:	Analysis Anisotropy Astronomical models Astronomy Astrophysics and Cosmology Big Bang theory Computer simulation Cosmic background radiation Cosmic microwave background Cosmological constant Cosmology Dark energy Elementary Particles Gravitation Gravitational waves Hadrons Heavy Ions Measurement Science and Instrumentation Model accuracy Nuclear Energy Nuclear Physics Parameter estimation Physics Physics and Astronomy Quantum Field Theories Quantum Field Theory Regular Article - Theoretical Physics Sirens String Theory Supernovae Telescope
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Summary:	We study the holographic dark energy (HDE) model by using the future gravitational wave (GW) standard siren data observed from the Einstein Telescope (ET) in this work. We simulate 1000 GW standard siren data based on a 10-year observation of the ET to make this analysis. We find that all the cosmological parameters in the HDE model can be tremendously improved by including the GW standard siren data in the cosmological fit. The GW data combined with the current cosmic microwave background anisotropies, baryon acoustic oscillations, and type Ia supernovae data will measure the cosmological parameters Ω m , H 0 , and c in the HDE model to be at the accuracies of 1.28%, 0.59%, and 3.69%, respectively. A comparison with the cosmological constant model and the constant- w dark energy model shows that, compared to the standard model, the parameter degeneracies will be broken more thoroughly in a dynamical dark energy model. We find that the GW data alone can provide a fairly good measurement for H 0 , but for other cosmological parameters the GW data alone can only provide rather weak measurements. However, due to the fact that the parameter degeneracies can be broken by the GW data, the standard sirens can play an essential role in improving the parameter estimation.
ISSN:	1434-6044 1434-6052