Density Perturbations in the Universe from Massive Vector Fields

@article{Dimopoulos2007DensityPI,
  title={Density Perturbations in the Universe from Massive Vector Fields},
  author={Konstantinos Dimopoulos},
  journal={arXiv: High Energy Physics - Theory},
  year={2007},
  volume={957},
  pages={387-390}
}
  • K. Dimopoulos
  • Published 7 September 2007
  • Physics, Geology
  • arXiv: High Energy Physics - Theory
I discuss the possibility of using a massive vector field to generate the density perturbation in the Universe. I find that a scale-invariant superhorizon spectrum of vector field perturbations is possible to generate during inflation. The associated curvature perturbation is imprinted onto the Universe following the curvaton scenario. The mechanism does not generate a long-range anisotropy because an oscillating massive vector field behaves as a pressureless isotropic fluid. 
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References

SHOWING 1-7 OF 7 REFERENCES

Supergravity inspired Vector curvaton

It is investigated whether a massive Abelian vector field, whose gauge kinetic function is growing during inflation, can be responsible for the generation of the curvature perturbation in the

Phys. Lett. B Nucl. Phys. B Phys. Rev. D

  • Phys. Lett. B Nucl. Phys. B Phys. Rev. D
  • 2002

Lyth, Cosmological Inflation and Large Scale Structure

  • 2000

Nucl. Phys. B Phys. Rev. Lett

  • Nucl. Phys. B Phys. Rev. Lett
  • 1995

Phys. Rev. D

  • Phys. Rev. D
  • 2006

Phys. Rev. Lett

  • Phys. Rev. Lett
  • 2005