The Wave Function of the Universe and CMB Fluctuations
High Energy Physics - Theory
2019-09-04 v5 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
Abstract
The Hartle-Hawking and Tunneling (Vilenkin) wave functions are treated in the Hamiltonian formalism. We find that the leading (i.e. quadratic) terms in the fluctuations around a maximally symmetric background, are indeed Gaussian (rather than inverse Gaussian), for both types of wave function, when properly interpreted. However the suppression of non-Gaussianities and hence the recovery of the Bunch-Davies state is not transparent.
Keywords
Cite
@article{arxiv.1811.12892,
title = {The Wave Function of the Universe and CMB Fluctuations},
author = {S. P. de Alwis},
journal= {arXiv preprint arXiv:1811.12892},
year = {2019}
}
Comments
Some clarifications added, typos corrected, version to be published in PRD