About Time
Abstract
Description
The concept of time is discussed in the context of the canonical formulation of the gravitational field. Using a hypersurface orthogonal foliation, the arbitrariness of the lapse function is eliminated and the shift vector vanishes, allowing a consistent definition of time.
10 pages, Revtex, no figures, email maia@mat.unb.br
10 pages, Revtex, no figures, email maia@mat.unb.br