Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1996-11-05
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
10 pages, Revtex, no figures, email maia@mat.unb.br
Scientific paper
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.
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