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

Abstract

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.

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

References in corpus (3)

• The Pre-Big Bang Scenario in String Cosmology
• Hilbert Space Structures on the Solution Space of Klein-Gordon Type Evolution Equations
• Path integral for minisuperspaces and its relation with non equivalent canonical quantizations