# Statistical anisotropy of the curvature perturbation from vector field perturbations.

@article{Dimopoulos2008StatisticalAO,
title={Statistical anisotropy of the curvature perturbation from vector field perturbations.},
author={Konstantinos Dimopoulos and Mindaugas Kar{\vc}iauskas and David H. Lyth and Yeinzon Rodriguez Department of Physics Lancaster University and Centro de Investigaciones Universidad Antonio Narino and Escuela de Fisica Universidad Industrial de Santander},
journal={Journal of Cosmology and Astroparticle Physics},
year={2008},
volume={2009},
pages={013-013}
}
• Published 5 September 2008
• Physics, Mathematics
• Journal of Cosmology and Astroparticle Physics
The δN formula for the primordial curvature perturbation ζ is extended to include vector as well as scalar fields. Formulas for the tree-level contributions to the spectrum and bispectrum of ζ are given, exhibiting statistical anisotropy. The one-loop contribution to the spectrum of ζ is also worked out. We then consider the generation of vector field perturbations from the vacuum, including the longitudinal component that will be present if there is no gauge invariance. Finally, the δN formula…
We consider the generation of primordial curvature perturbation by general non-Abelian vector fields without committing to a particular group. Self-interactions of non-Abelian fields make the field
We consider the generation of primordial curvature perturbation by general non-Abelian vector fields without committing to a particular group. Self-interactions of non-Abelian fields make the field
• Physics
• 2013
We study curvature perturbations in the anisotropic inflationary model with a complex scalar field charged under a $U(1)$ gauge field in Bianchi I universe. Due to Abelian Higgs mechanism, the gauge
We consider a primordial SU(2) vector multiplet during inflation in models where quantum fluctuations of vector fields are involved in producing the curvature perturbation. Recently, a lot of
• Physics
• 2009
We consider a primordial SU(2) vector multiplet during inflation in models where quantum fluctuations of vector fields are involved in producing the curvature perturbation. Recently, a lot of
• Physics
• 2017
We present the effective field theory studies of primordial statistical anisotropies in models of anisotropic inflation. The general action in unitary gauge is presented to calculate the leading
• Physics
• 2013
The inflaton might be coupled to a gauge field through a term f2(ϕ)FμνFμν. If f∝a−2 where a(t) is the scale factor, the perturbation δW of the gauge field generates a potentially observable
• Physics
Physical Review D
• 2019
We present a model of inflation in which the inflaton field is charged under a triplet of $U(1)$ gauge fields. The model enjoys an internal $O(3)$ symmetry supporting the isotropic FRW solution. With
• Physics
• 2013
The inflaton might be coupled to a gauge field through a term f2()FμνFμν. If f∝a−2 where a(t) is the scale factor, the perturbation δW of the gauge field generates a potentially observable

## References

SHOWING 1-10 OF 83 REFERENCES

• Physics
• 2009
We analyze the behavior of linear perturbations in vector inflation. In contrast to scalar field inflation, the linearized theory with vector fields contains couplings between scalar, vector, and
• Physics
• 2008
We present a new mechanism for generating primordial statistical anisotropy of curvature perturbations. We introduce a vector field which has a non-minimal kinetic term and couples with a waterfall
I investigate the possibility that the observed curvature perturbation is due to a massive vector field. To avoid generating a large scale anisotropy the vector field is not taken to be driving
• Physics
• 2009
We suppose that a vector field perturbation causes part of the primordial curvature perturbation. The non-Gaussianity parameter f_NL is then, in general, statistically anisotropic. We calculate its
We investigate the perturbation theory of a fixed-norm, timelike Lorentz-violating vector field. After consistently quantizing the vector field to put constraints on its parameters, we compute the
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
• Physics
• 2008
It is shown that a massive Abelian vector boson field can generate the curvature perturbation in the Universe, when coupled non-minimally to gravity, through an RA2 coupling. The vector boson acts as
• Physics
• 2008
We discuss the gravitational waves (GW) in the context of vector inflation. We derive the action for tensor perturbations and find that tachyonic instabilities are present in most (but not all) of