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Modified Gravity and Cosmology: An Update by the CANTATA Network
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In: https://hal.archives-ouvertes.fr/hal-03261155 ; 2021 (2021)
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Neural Network Reconstruction of Late-Time Cosmology and Null Tests ...
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Modified Gravity and Cosmology: An Update by the CANTATA Network ...
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Classification of Teleparallel Horndeski Cosmology via Noether Symmetries ...
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Gravitational Wave Propagation and Polarizations in the Teleparallel analog of Horndeski Gravity ...
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Primordial black holes in a dimensionally oxidizing Universe ...
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Higher dimensional static and spherically symmetric solutions in extended Gauss-Bonnet gravity ...
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Exact spherically symmetric solutions in modified Gauss-Bonnet gravity from Noether symmetry approach ...
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Classification of the Horndeski cosmologies via Noether Symmetries ...
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Noether Symmetries as a geometric criterion to select theories of gravity ...
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Classification of the Horndeski cosmologies via Noether symmetries
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Cosmological production of black holes: a way to constrain alternative theories of gravity ...
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Constraining Generalized Non-local Cosmology from Noether Symmetries ...
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Constraining generalized non-local cosmology from Noether symmetries
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The maximum sizes of large scale structures in alternative theories of gravity ...
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Abstract:
The maximum size of a cosmic structure is given by the maximum turnaround radius -- the scale where the attraction due to its mass is balanced by the repulsion due to dark energy. We derive generic formulae for the estimation of the maximum turnaround radius in any theory of gravity obeying the Einstein equivalence principle, in two situations: on a spherically symmetric spacetime and on a perturbed Friedman-Robertson-Walker spacetime. We show that the two formulae agree. As an application of our formula, we calculate the maximum turnaround radius in the case of the Brans-Dicke theory of gravity. We find that for this theory, such maximum sizes always lie above the \LCDM value, by a factor $1 + \frac{1}{3ω}$, where $ω\gg 1$ is the Brans-Dicke parameter, implying consistency of the theory with current data. ... : v2; 1+18 pages; added references and discussions, improved presentation; accepted in JCAP ...
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Keyword:
Cosmology and Nongalactic Astrophysics astro-ph.CO; FOS Physical sciences; General Relativity and Quantum Cosmology gr-qc
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URL: https://dx.doi.org/10.48550/arxiv.1611.05055 https://arxiv.org/abs/1611.05055
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