Quantum Cosmology for Tunneling Universes
General Relativity and Quantum Cosmology
2007-05-23 v1
Abstract
In a quantum cosmological model consisting of a Euclidean region and a Lorentzian region, Hartle-Hawking's no-bounary wave function, and Linde's wave function and Vilenkin's tunneling wave function are briefly described and compared with each other. We put a particular emphasis on semiclassical gravity from quantum cosmology and compare it with the conventional quantum field theory in curved spacetimes. Finally, we discuss the recent debate on catastrophic particle production in the tunneling universe between Rubakov and Vilenkin within the semiclassical gravity.
Keywords
Cite
@article{arxiv.gr-qc/0403015,
title = {Quantum Cosmology for Tunneling Universes},
author = {Sang Pyo Kim},
journal= {arXiv preprint arXiv:gr-qc/0403015},
year = {2007}
}
Comments
RevTex4; invited talk at VI APCTP International Conference of Gravitation and Astrophysics (ICGA6), Seoul, Oct. 6-9, 2003