Time in Quantum Cosmology
Claus Kiefer, Patrick Peter
Abstract
Time in quantum gravity is not a well-defined notion despite its central role in the very definition of dynamics. Using the formalism of quantum geometrodynamics, we briefly review the problem and illustrate it with two proposed solutions. Our main application is quantum cosmology—the application of quantum gravity to the Universe as a whole.
Topics & Concepts
PhysicsQuantum cosmologyLoop quantum cosmologyQuantum gravityCosmologyTheoretical physicsFormalism (music)QuantumQuantum geometryClassical mechanicsLoop quantum gravityProblem of timeSpin foamQuantum processQuantum mechanicsQuantum dynamicsMusicalArtVisual artsQuantum Mechanics and ApplicationsNoncommutative and Quantum Gravity TheoriesCosmology and Gravitation Theories