Scalar tilt from broken conformal invariance
High Energy Physics - Theory
2011-03-31 v1
Abstract
Within recently proposed scenario which explains flatness of the spectrum of scalar cosmological perturbations by a combination of conformal and global symmetries, we discuss the effect of weak breaking of conformal invariance. We find that the scalar power spectrum obtains a small tilt which depends on both the strength of conformal symmetry breaking and the law of evolution of the scale factor.
Cite
@article{arxiv.1007.3417,
title = {Scalar tilt from broken conformal invariance},
author = {V. Rubakov and M. Osipov},
journal= {arXiv preprint arXiv:1007.3417},
year = {2011}
}