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 anisotropics and galaxy clustering.
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Salopek, D.S. (1996). Cosmological Inflation and the Nature of Time. In: Sánchez, N., Zichichi, A. (eds) String Gravity and Physics at the Planck Energy Scale. Mathematical and Physical Sciences, vol 476. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0237-4_18
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DOI: https://doi.org/10.1007/978-94-009-0237-4_18
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