Corpus ID: 235195803

Modified Gravity and Cosmology: An Update by the CANTATA Network

@inproceedings{Saridakis2021ModifiedGA,
  title={Modified Gravity and Cosmology: An Update by the CANTATA Network},
  author={E. Saridakis and R. Lazkoz and V. Salzano and P. Moniz and S. Capozziello and J. Jim'enez and M. Laurentis and G. J. Olmo and Y. Akrami and Sebastian Bahamonde and J. L. Bl'azquez-Salcedo and Christian G. Bohmer and C. Bonvin and Mariam Bouhmadi-L'opez and P. Brax and G. Calcagni and R. Casadio and J. Cembranos and 'Alvaro de la Cruz-Dombriz and A. Davis and Adri{\`a} Delhom and E. D. Valentino and K. Dialektopoulos and Benjamin T. Elder and J. Ezquiaga and N. Frusciante and R. Garattini and L. Gergely and A. Giusti and Lavinia Heisenberg and M. Hohmann and D. Iosifidis and L. Kazantzidis and B. Kleihaus and T. Koivisto and J. Kunz and F. Lobo and M. Martinelli and Prado Mart'in-Moruno and J. P. Mimoso and D. Mota and S. Peirone and L. Perivolaropoulos and V. Pettorino and C. Pfeifer and L. Pizzuti and D. Rubiera-Garc{\'i}a and J. Said and M. Sakellariadou and I. D. Saltas and A. Mancini and N. Voicu and A. Wojnar},
  year={2021}
}
General Relativity and the ΛCDM framework are currently the standard lore and constitute the concordance paradigm. Nevertheless, long-standing open theoretical issues, as well as possible new observational ones arising from the explosive development of cosmology the last two decades, offer the motivation and lead a large amount of research to be devoted in constructing various extensions and modifications. All extended theories and scenarios are first examined under the light of theoretical… Expand

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References

SHOWING 1-10 OF 86 REFERENCES
Breaking degeneracies in modified gravity with higher (than 2nd) order weak-lensing statistics
General relativity (GR) has been well tested up to solar system scales, but it is much less certain that standard gravity remains an accurate description on the largest, i.e. cosmological, scales.Expand
Do current cosmological observations rule out all covariant Galileons
We revisit the cosmology of covariant Galileon gravity in view of the most recent cosmological data sets, including weak lensing. As a higher derivative theory, covariant Galileon models do not haveExpand
f(R) gravity modifications: from the action to the data
TLDR
This work tries to reformulate f(R) Lagrangian terms as explicit functions of the redshift, i.e., as f(z), including new terms which would allow for deviations from the consensus cosmological model, the $$\varLambda $$ΛCDM model. Expand
Testing the equivalence principle on cosmological scales
The equivalence principle, that is one of the main pillars of general relativity, is very well tested in the Solar system; however, its validity is more uncertain on cosmological scales, or when darkExpand
Observational constraints of $f(Q)$ gravity
In this work, we consider an extension of symmetric teleparallel gravity, namely, f(Q) gravity, where the fundamental block to describe spacetime is the nonmetricity, Q. Within this formulation ofExpand
Dynamical systems applied to cosmology: dark energy and modified gravity
Abstract The Nobel Prize winning confirmation in 1998 of the accelerated expansion of our Universe put into sharp focus the need of a consistent theoretical model to explain the origin of thisExpand
Obtaining Precision Constraints on Modified Gravity with Helioseismology.
TLDR
It is shown that helioseismic observations have the potential to improve constraints on the strength of the fifth force by more than 2 orders of magnitude, which would suggest constraints of similar order for the theory's free functions around a cosmological background. Expand
Model-independent constraints on dark energy evolution from low-redshift observations
Knowing the late time evolution of the Universe and finding out the causes for this evolution are the important challenges of modern cosmology. In this work, we adopt a model-independent cosmographicExpand
The role of the tachyonic instability in Horndeski gravity.
The tachyonic instability is associated with the unboundedness of the Hamiltonian from below and results in an unstable low-$k$ regime. In the cosmological exploration of modified gravity, it isExpand
f(T) teleparallel gravity and cosmology.
TLDR
The role of torsion in gravity has been extensively investigated along the main direction of bringing gravity closer to its gauge formulation and incorporating spin in a geometric description, and various torsional constructions, from teleparallel, to Einstein-Cartan, and metric-affine gauge theories are reviewed. Expand
...
1
2
3
4
5
...