The Role of Time in Physical Cosmology
Abstract
Recent advances in observational cosmology are changing the way we view the nature of time. In general relativity, the freedom in choosing a time hypersurface has hampered the implementation of the theory. Fortunately, Hamilton-Jacobi theory enables one to describe all time hypersurfaces on an equal footing. Using an expansion in powers of the spatial curvature, one may solve for the wavefunctional in a semiclassical approximation. In this way, one may readily compare predictions of various inflation models with observations of microwave background anisotropies and galaxy clustering.
Keywords
Cite
@article{arxiv.astro-ph/9510059,
title = {The Role of Time in Physical Cosmology},
author = {D. S. Salopek},
journal= {arXiv preprint arXiv:astro-ph/9510059},
year = {2007}
}
Comments
8 pages, self-unpacking, uuencoded, gz-compressed postscript file, in Proceedings of the Sixth Quantum Gravity Seminar, Moscow, Russia, June 12-19, 1995, Three additional figures