Weak lensing probe of cubic Galileon model

@article{Dinda2018WeakLP,
  title={Weak lensing probe of cubic Galileon model},
  author={Bikash R. Dinda},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2018},
  volume={2018},
  pages={017 - 017}
}
  • Bikash R. Dinda
  • Published 5 January 2018
  • Physics
  • Journal of Cosmology and Astroparticle Physics
The cubic Galileon model containing the lowest non-trivial order action of the full Galileon action can produce the stable late-time cosmic acceleration. This model can have a significant role in the growth of structures. The signatures of the cubic Galileon model in the structure formation can be probed by the weak lensing statistics. Weak lensing convergence statistics is one of the strongest probes to the structure formation and hence it can probe the dark energy or modified theories of… 

Consistency of cubic Galileon cosmology: Model-independent bounds from Pantheon data

We revisit the cosmological dynamics of the cubic Galileon model in light of the recently proposed model-independent analyses of the Pantheon supernova data. At the background level, it is shown to

Consistency of Cubic Galileon Cosmology: Model-Independent Bounds from Background Expansion and Perturbative Analyses

We revisit the cosmological dynamics of the cubic Galileon model in light of the recently proposed model-independent analyses of the Pantheon supernova data. At the background level, it is shown to

Study of cubic Galileon gravity using N -body simulations

We use N-body simulation to study the structure formation in the Cubic Galileon Gravity model where along with the usual kinetic and potential term we also have a higher derivative self-interaction

The one-loop matter bispectrum as a probe of gravity and dark energy

Gravity-induced non-Gaussianity in the large-scale structure of the Universe, characterised by higher-order statistics such as the bispectrum (three-point cumulant), is expected to contain rich

CMB lensing bispectrum as a probe of modified gravity theories

Cosmological structures grow differently in theories of gravity which are modified as compared to Einstein’s general relativity (GR). Cosmic microwave background (CMB) fluctuation patterns at the

Anti-screening of the Galileon force around a disk center hole

The Vainshtein mechanism is known as an efficient way of screening the fifth force around a matter source in modified gravity. This has been verified mainly in highly symmetric matter configurations.

Modelling the non-linear bispectrum in modified gravity

Future large-scale structure surveys will measure three-point correlations with high statistical significance. This will offer significant improvements on our understanding of gravity, provided we

Modelling the matter bispectrum at small scales in modified gravity

Future large-scale structure surveys will measure three-point statistics with high statistical significance. This will offer significant improvements on our understanding of gravity, provided we can

The shape dependence of Vainshtein screening in the cosmic matter bispectrum

One of the most pressing questions in modified gravity is how deviations from general relativity can manifest in upcoming galaxy surveys. This is especially relevant for theories exhibiting

Parton distributions from LHC, HERA, Tevatron and fixed target data: MSHT20 PDFs

We present the new MSHT20 set of parton distribution functions (PDFs) of the proton, determined from global analyses of the available hard scattering data. The PDFs are made available at NNLO, NLO,

References

SHOWING 1-10 OF 178 REFERENCES

Cosmology of the selfaccelerating third order Galileon

In this paper we start from the original formulation of the galileon model with the original choice for couplings to gravity. Within this framework we find that there is still a subset of possible

Matter bispectrum in cubic Galileon cosmologies

In this paper we obtain the bispectrum of dark matter density perturbations in the frame of covariant cubic Galileon theories. This result is obtained by means of a semi-analytic approach to

Galileon Cosmology

We study the cosmology of a galileon scalar-tensor theory, obtained by covariantizing the decoupling lagrangian of the Dvali-Gabadadze-Poratti (DGP) model. Despite being local in 3+1 dimensions, the

The observational status of Galileon gravity after Planck

We use the latest CMB data from Planck, together with BAO measurements, to constrain the full parameter space of Galileon gravity. We constrain separately the three main branches of the theory known

Self-accelerating universe in Galileon cosmology

We present a cosmological model with a solution that self-accelerates at late times without signs of ghost instabilities on small scales. The model is a natural extension of the Brans-Dicke (BD)

Cosmic expansion and growth histories in Galileon scalar-tensor models of dark energy

We study models of late-time cosmic acceleration in terms of scalar-tensor theories generalized to include a certain class of nonlinear derivative interaction of the scalar field. The nonlinear

First and second order cosmological perturbations in light mass Galileon models

In this paper, we investigate the first and second order cosmological perturbations in the light mass Galileon (LMG) scenario. LMG action includes the cubic Galileon term along with the standard

Cosmology of a Covariant Galileon Field

We study the cosmology of a covariant scalar field respecting a Galilean symmetry in flat space-time. We show the existence of a tracker solution that finally approaches a de Sitter fixed point
...