On the anisotropy of the gravitational wave background from massless preheating

@article{Bethke2014OnTA,
  title={On the anisotropy of the gravitational wave background from massless preheating},
  author={Laura Bethke and Daniel Garc{\'i}a Figueroa and Arttu Rajantie},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2014},
  volume={2014},
  pages={047-047}
}
When a light scalar field is present during inflation, its value varies on superhorizon scales, modulating the preheating process at the end of inflation. Consequently, the amplitude of the gravitational wave (GW) background produced during preheating is also modulated. The observed energy density of this background appears therefore anisotropic at different angles in the sky. We provide a master formula for the angular power spectrum Cl of the anisotropies in the GW background from preheating… Expand
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References

SHOWING 1-10 OF 85 REFERENCES
Anisotropies in the gravitational wave background from preheating.
TLDR
If future direct detection GW experiments are capable of detecting the GW produced by preheating, they should also be able to detect this effect, which could eventually provide a powerful way to distinguish between different inflationary and pre heating scenarios. Expand
Theory and numerics of gravitational waves from preheating after inflation
Preheating after inflation involves large, time-dependent field inhomogeneities, which act as a classical source of gravitational radiation. The resulting spectrum might be probed by direct detectionExpand
Stochastic gravitational wave production after inflation
In many models of inflation, the period of accelerated expansion ends with preheating, a highly non-thermal phase of evolution during which the inflaton pumps energy into a specific set of momentumExpand
Gravitational waves from Abelian gauge fields and cosmic strings at preheating
Primordial gravitational waves provide a very important stochastic background that could be detected soon with interferometric gravitational wave antennas or indirectly via the induced patterns inExpand
Gravitational waves from self-ordering scalar fields
Gravitational waves were copiously produced in the early Universe whenever the processes taking place were sufficiently violent. The spectra of several of these gravitational wave backgrounds onExpand
Gravitational wave background from reheating after hybrid inflation
The reheating of the Universe after hybrid inflation proceeds through the nucleation and subsequent collision of large concentrations of energy density in the form of bubblelike structures moving atExpand
Gravitational wave production at the end of inflation.
TLDR
An explicit model where the inflationary energy scale is approximately 10{9} GeV yields a signal close to the sensitivity of Advanced Laser Interferometer Gravitational Wave Observatory and Big Bang Observer, highlighting the possibility of a new observational "window" into inflationary physics. Expand
Electrically charged curvaton
We consider the possibility that the primordial curvature perturbation was generated through the curvaton mechanism from a scalar field with an electric charge, or precisely the Standard Model U(1)Expand
The stochastic gravitational wave background from turbulence and magnetic fields generated by a first-order phase transition
We analytically derive the spectrum of gravitational waves due to magneto-hydrodynamical turbulence generated by bubble collisions in a first-order phase transition. In contrast to previous studies,Expand
Nonlinear metric perturbation enhancement of primordial gravitational waves.
TLDR
The evolution of the full set of Einstein equations during preheating after inflation is presented, and a generic supersymmetric model of hybrid inflation is studied, integrating fields and metric fluctuations in a 3-dimensional lattice. Expand
...
1
2
3
4
5
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