Density and graviton perturbations in the cosmic microwave background

  title={Density and graviton perturbations in the cosmic microwave background},
  author={Alfredo Barbosa Henriques and Luis E. Mendes and R. Gordon Moorhouse},
  journal={Physical Review D},
This paper evaluates and compares the gravitational wave and density perturbation contributions to the cosmic microwave background radiation, on the basis of the same power law inflationary model. The inflation to radiation transition is treated as instantaneous, but a model is constructed to allow for a smooth transition from the radiation to the matter dominated eras. The equations are numerically investigated and integrated, without any basic approximations being made. Use is made of the… 
2 Citations

Tables from this paper

Post-inflationary reheating and perturbations of the cosmic microwave background
We formulate a gradual dynamical transition from a power-law inflation era with a scalar field to a radiation era with no scalar field including inhomogeneous perturbations to the Friedmann-
Angular Variation of the Perpendicular Giant Magnetoresistance in Magnetization Layers
An extended Boltzmann equation approach described by electron spinor distribution function and electrochemical potential is proposed to study the variation of the giant magnetoresistance (GMR) for


Cosmological Perturbation Theory in the Synchronous and Conformal Newtonian Gauges
This paper presents a systematic treatment of the linear theory of scalar gravitational perturbations in the synchronous gauge and the conformal Newtonian (or longitudinal) gauge. It differs from
Models of inflation and the spectral index of the density perturbation
If an adiabatic density perturbation is responsible for large scale structure and the cmb anisotropy, its spectral index n will be measured in the forseeable future with an accuracy ∆n ∼ .01. This is
Root Mean Square Anisotropy in the COBE* DMR Four-Year Sky Maps
The sky rms is the simplest model-independent characterization of a cosmological anisotropy signal. We show that the rms temperature fluctuations determined from the COBE Differential Microwave
Phys. Rev. D52
  • Phys. Rev. D52
  • 1995
Phys. Rev. D50
  • Phys. Rev. D50
  • 1994
Phys. Rep
  • Phys. Rep
  • 1992
Phys. Rev. D48
  • Phys. Rev. D48
  • 1993
Phys. Rev. D53
  • Phys. Rev. D53
  • 1996
RMS anisotrophy in the COBEDMR four - year sky maps ”
  • Phys . Rev . D
  • 1996
  • Class.Quant.Grav
  • 1995