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.
- Received 18 April 2019
DOI:https://doi.org/10.1103/PhysRevD.100.043544
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society