Comment on the choice of time in a two-component formulation of the Wheeler--DeWitt equation

Details Comment on the choice of time in a two-component formulation of the Wheeler--DeWitt equation Comment on the choice of time in a two-component formulation of the Wheeler--DeWitt equation

2006-09-22

arxiv.org/abs/gr-qc/0609102v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages; version accepted for publication in Int. J. Mod. Phys. D

Scientific paper

10.1142/S0218271807010705

The two-component formalism in quantum cosmology is revisited with a
particular emphasis on the identification of time. Its relation with the
appearance of imaginary eigenvalues is established. It is explicitly shown how
a good choice of the global time prevents this peculiarity.

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