Quantum Gravity and the Big Bang
arXiv:astro-ph/0309478
Abstract
Quantum gravity has matured over the last decade to a theory which can tell in a precise and explicit way how cosmological singularities of general relativity are removed. A branch of the universe "before" the classical big bang is obtained which is connected to ours by quantum evolution through a region around the singularity where the classical space-time dissolves. We discuss the basic mechanism as well as applications ranging to new phenomenological scenarios of the early universe expansion, such as an inflationary period.
6 pages, invited talk at the conference "Where Cosmology and Fundamental Physics Meet" at IUFM, Marseille, June 23 - 26, 2003
References in corpus (15)
- Discreteness of area and volume in quantum gravity
- Quantum Theory of Gravity I: Area Operators
- Absence of Singularity in Loop Quantum Cosmology
- Quantum Spin Dynamics (QSD)
- QSD V : Quantum Gravity as the Natural Regulator of Matter Quantum Field Theories
- Isotropic Loop Quantum Cosmology
- Inflation from Quantum Geometry
- The Inverse Scale Factor in Isotropic Quantum Geometry
- Homogeneous Loop Quantum Cosmology
- Quantum Symmetry Reduction for Diffeomorphism Invariant Theories of Connections
- The Area Operator in the Spherically Symmetric Sector of Loop Quantum Gravity
- Quantization Ambiguities in Isotropic Quantum Geometry
- Dynamical Initial Conditions in Quantum Cosmology
- Loop Quantum Cosmology, Boundary Proposals, and Inflation
- Initial Conditions for a Universe