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  1. cordis.europa.eu

    CosTesGrav. Grant agreement ID: 646702 Open in new window Project website DOI 10.3030/646702. Project closed EC signature ... We then develop better theoretical frameworks to perform cosmological tests of gravity that include non-linear scales by exploiting our theoretical knowledge of the models and our state-of-the-art simulations.
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  3. cordis.europa.eu

    Einstein's theory of General Relativity (GR) is tested accurately within the local universe i.e., the solar system, but this leaves open the possibility that it is not a good description at the largest scales in the Universe. The standard model of cosmology assumes GR as a...
  4. Cosmological observations are beginning to reach a level of precision that allow us to test some of the most fundamental assumptions in our working model of the Universe. One such an assumption is that gravity is governed by the General Theory of Relativity. In this review we discuss how one might go about extending General Relativity and how such extensions can be described in a unified way ...
    Author:Pedro G. FerreiraPublished:2019
  5. researchportal.port.ac.uk

    The main objective of my project is to develop cosmological tests of gravity and seek solutions to the origin of the observed accelerated expansion of the Universe by challenging conventional GR. Upcoming surveys will make cosmological tests of gravity a reality in the next five years. ... CosTesGrav: Status: Finished: Effective start/end date ...
  6. Modifications of general relativity provide an alternative explanation to dark energy for the observed acceleration of the universe. We review recent developments in modified gravity theories, focusing on higher dimensional approaches and chameleon/f(R) theories. We classify these models in terms of the screening mechanisms that enable such theories to approach general relativity on small ...
  7. systems to obtain exquisite constraints of gravity (Will 2014). With the advent of gravita-tional wave astronomy and black hole imaging, it will be possible to, for the rst time, nd constraints in the strong gravity regime. When extrapolated to the largest, cosmological, scales, the SM and GR seem to accu-
  8. In this review, we outline the expected tests of gravity that will be achieved at cosmological scales in the upcoming decades. We focus mainly on constraints on phenomenologically parameterized deviations from general relativity, which allow to test gravity in a model-independent way, but also review some of the expected constraints obtained with more physically motivated approaches. After ...
  9. sciencedirect.com

    Unlike solar system tests, where the matter stress-energy tensor is known (i.e., the Sun), cosmological tests inherently rely on assumptions about the stress-energy composition of the universe — any modification to the gravitational side of Einstein's equations can equivalently be interpreted as a dark energy contribution to the stress-energy ...
  10. indico.cern.ch

    Cosmological Tests of Modified Gravity Institute of Cosmology and Gravitation, University of Portsmouth "Cosmological Tests of Modified Gravity" KK, Report of Progress of Physics 79 (2016) no.4, 046902, arXiv:1504.04623. Cosmic acceleration

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