# Cosmology in a certain vector-tensor theory of gravitation

@article{Dale2014CosmologyIA, title={Cosmology in a certain vector-tensor theory of gravitation}, author={Roberto Dale and Diego S'aez}, journal={Physical Review D}, year={2014}, volume={89}, pages={044035} }

We study relevant cosmological topics in the framework of a certain vector-tensor theory of gravitation (hereafter VT). This theory is first compared with the so-called extended electromagnetism (EE). These theories have a notable resemblance and both explain the existence of a cosmological constant. It is shown that, in EE, a positive dark energy density requires a Lagrangian leading to quantum ghosts, whereas VT is free from these ghosts. On account of this fact, the remainder of the paper is…

## 8 Citations

### On the horizons in a viable vector-tensor theory of gravitation

- Physics
- 2015

A certain vector-tensor (VT) theory of gravitation was tested in previous papers. In the background universe, the vector field of the theory has a certain energy density, which is appropriate to play…

### More about a successful vector-tensor theory of gravitation

- Physics
- 2016

The vector-tensor (VT) theory of gravitation revisited in this article was studied in previous papers, where it was proved that VT works and deserves attention. New observational data and numerical…

### The Maxwell–Chern–Simons gravity, and its cosmological implications

- Physics, Mathematics
- 2017

We consider the cosmological implications of a gravitational theory containing two vector fields coupled via a generalized Chern–Simons term. One of the vector fields is the usual Maxwell field,…

### Spherical symmetric dust collapse in vector-tensor gravity

- PhysicsPhysical Review D
- 2018

There is a viable vector-tensor gravity (VTG) theory, whose vector field produces repulsive forces leading to important effects. In the background universe, the effect of these forces is an…

### Interpreting deviations between AR-VTG and GR

- PhysicsInternational Journal of Modern Physics D
- 2019

The cosmic microwave background (CMB) anisotropies predicted by two cosmological models are compared, one of them is the standard model of general relativity with cold dark matter and cosmological…

### Testing vector-tensor gravity with current cosmological observations

- Physics
- 2015

A certain vector-tensor theory of gravitation (VT) has been recently applied to cosmology (Phys. Rev. D, 89, 2014, 044035). It leads to encouraging results. The zero order energy density of the…

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