Conformal invariance of curvature perturbation
General Relativity and Quantum Cosmology
2015-05-28 v1 Cosmology and Nongalactic Astrophysics
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We show that in the single component situation all perturbation variables in the comoving gauge are conformally invariant to all perturbation orders. Generally we identify a special time slicing, the uniform-conformal transformation slicing, where all perturbations are again conformally invariant to all perturbation orders. We apply this result to the delta N formalism, and show its conformal invariance.
Keywords
Cite
@article{arxiv.1107.1840,
title = {Conformal invariance of curvature perturbation},
author = {Jinn-Ouk Gong and Jai-chan Hwang and Wan Il Park and Misao Sasaki and Yong-Seon Song},
journal= {arXiv preprint arXiv:1107.1840},
year = {2015}
}
Comments
15 pages, 1 figure