# Testing the violation of the equivalence principle in the electromagnetic sector and its consequences in f(T) gravity

@article{Said2020TestingTV, title={Testing the violation of the equivalence principle in the electromagnetic sector and its consequences in f(T) gravity}, author={Jackson Levi Said and Jurgen Mifsud and David Parkinson and Emmanuel N. Saridakis and Joseph Sultana and Kristian Zarb Adami}, journal={Journal of Cosmology and Astroparticle Physics}, year={2020} }

A violation of the distance-duality relation is directly linked with a temporal variation of the electromagnetic fine-structure constant. We consider a number of well-studied $f(T)$ gravity models and we revise the theoretical prediction of their corresponding induced violation of the distance-duality relationship. We further extract constraints on the involved model parameters through fine-structure constant variation data, alongside with supernovae data, and Hubble parameter measurements… Expand

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#### References

SHOWING 1-10 OF 272 REFERENCES

Breaking of the equivalence principle in the electromagnetic sector and its cosmological signatures

- Physics
- 2014

This paper proposes a systematic study of cosmological signatures of modifications of gravity via the presence of a scalar field with a multiplicative coupling to the electromagnetic Lagrangian. We… Expand

The variation of the fine-structure constant from disformal couplings

- Physics
- 2015

We study a theory in which the electromagnetic field is disformally coupled to a scalar field, in addition to a usual non-minimal electromagnetic coupling. We show that disformal couplings modify the… Expand

Variation in the fine-structure constant, distance-duality relation and the next generation of high-resolution spectrograph

- Physics
- 2019

The possibility of variation of the fundamental constants of nature has been a long-standing question, with important consequences for fundamental physics and cosmology. In particular, it has been… Expand

Violations of the equivalence principle in a dilaton-runaway scenario

- Physics
- 2002

We explore a version of the cosmological dilaton-fixing and decoupling mech- anism in which the dilaton-dependence of the low-energy effective action is extremized for infinitely large values of the… Expand

Cosmic distance-duality as a probe of exotic physics and acceleration

- Physics
- 2004

In cosmology, distances based on standard candles (e.g. supernovae) and standard rulers (e.g. baryon oscillations) agree as long as three conditions are met: (1) photon number is conserved, (2)… Expand

The fundamental constants and their variation: observational and theoretical status

- Physics
- 2003

This article describes the various experimental bounds on the variation of the fundamental constants of nature. After a discussion of the role of fundamental constants, their definition and link with… Expand

Observational constraints on f(T) theory

- Physics
- 2010

Abstract The f ( T ) theory, which is an extension of teleparallel, or torsion scalar T , gravity, is recently proposed to explain the present cosmic accelerating expansion with no need of dark… Expand

New cosmological constraints on the variation of fundamental constants: the fine structure constant and the Higgs vacuum expectation value

- Physics
- 2013

Aims. We study the time variation of the fine structure constant, α, and the Higgs vacuum expectation value v, during the Big Bang nucleosynthesis (BBN). Methods. We computed primordial abundances of… Expand

New observational constraints on f(T) gravity from cosmic chronometers

- Physics
- 2016

We use the local value of the Hubble constant recently measured with 2.4% precision, as well as the latest compilation of cosmic chronometers data, together with standard probes such as Supernovae… Expand

The Distance Duality Relation from Strong Gravitational Lensing

- Physics
- 2015

Under very general assumptions of metric theory of spacetime, photons traveling along null geodesics and photon number conservation, two observable concepts of cosmic distance, i.e. the angular… Expand