Quantum Cosmological Models
General Relativity and Quantum Cosmology
2014-11-17 v3 High Energy Physics - Theory
Abstract
We contrast the initial condition requirements of various contemporary cosmological models, including inflationary and bouncing cosmologies. Various proposals such as Hartle-Hawking's no boundary, or Tunnelling boundary conditions are assessed on grounds of naturalness and fine tuning. Alternatively a quiescent or ``time machine'' state is considered. Extensions to brane models are also addressed. Further ideas about universe creation from a meta-universe are outlined. We compare the recent loop quantum cosmology of Bojowald and coworkers with these earlier proposals. A number of possible difficulties and limitations are outlined.
Cite
@article{arxiv.gr-qc/0412026,
title = {Quantum Cosmological Models},
author = {D. H. Coule},
journal= {arXiv preprint arXiv:gr-qc/0412026},
year = {2014}
}
Comments
revised: now includes time asymmetry, black hole final state etc, 71 pages