Cosmology in a certain vector-tensor theory of gravitation

  title={Cosmology in a certain vector-tensor theory of gravitation},
  author={Roberto Dale and Diego S'aez},
  journal={Physical Review D},
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… 

Figures and Tables from this paper

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

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

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

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

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

The Einstein dark energy model

Interpreting deviations between AR-VTG and GR

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

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



The Large Scale Structure of Space-Time

The theory of the causal structure of a general space-time is developed, and is used to study black holes and to prove a number of theorems establishing the inevitability of singualarities under certain conditions.

Theory and Experiment in Gravitational Physics

New technological advances have made it feasible to conduct measurements with precision levels which are suitable for experimental tests of the theory of general relativity. This book has been


  • Rev. D, 85, 124047
  • 2012


  • J., 455, 7
  • 1995


  • Rev. D, 66, 103511
  • 2002


  • Rev D, 22, 1882
  • 1980


  • Rev. D, 56, 596
  • 1997


  • Phys., 02, 025
  • 2009


  • Rev. D, 83, 023514
  • 2011