Model-independent measures of gravity at large scales
This paper aims at showing how to probe gravity in a model independent way using observable quantities which can be measured with the minimum number of assumptions.We find that it is possible to estimate the gravitational slip, defined as the ratio of the gravitational potentials, independently of a...
Gespeichert in:
| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
13 November 2018
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| In: |
International journal of modern physics. A, Particles and fields, gravitation, cosmology
Year: 2018, Jahrgang: 33, Heft: 31 |
| ISSN: | 1793-656X |
| DOI: | 10.1142/S0217751X18440220 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1142/S0217751X18440220 Verlag, Volltext: https://www.worldscientific.com/doi/abs/10.1142/S0217751X18440220 
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| Verfasserangaben: | Luca Amendola, Ana Marta Pinho and Santiago Casas |
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| 520 | |a This paper aims at showing how to probe gravity in a model independent way using observable quantities which can be measured with the minimum number of assumptions.We find that it is possible to estimate the gravitational slip, defined as the ratio of the gravitational potentials, independently of assumptions concerning initial conditions, bias, and other cosmological parameters. Analyzing all the data currently available, we find η≈0.5±0.9 in the redshift range z=0.2-0.8 - Future datasets, like those provided by the Euclid satellite, will tighten this constraint by more than an order of magnitude. | ||
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