Affiliation:
1. Faculty of Mathematics and Natural Sciences , Institute for Theoretical Physics, University of Cologne , Cologne , Germany
Abstract
Abstract
We give an introduction into quantum cosmology with emphasis on its conceptual parts. After a general motivation, we review the formalism of canonical quantum gravity on which discussions of quantum cosmology are usually based. We then present the minisuperspace Wheeler–DeWitt equation and elaborate on the problem of time, the imposition of boundary conditions, the semiclassical approximation, the origin of irreversibility, and singularity avoidance. Restriction is made to the framework of quantum geometrodynamics.
Subject
Physical and Theoretical Chemistry,General Physics and Astronomy,Mathematical Physics
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