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Title:
Quantum gravity and cosmological observations
Authors:
Bojowald, Martin
Affiliation:
Institute for Gravitational Physics and Geometry, The Pennsylvania State University, 104 Davey Lab, University Park, PA 16801
Publication:
PARTICLES AND FIELDS: Proceedings of the VI Latin American Symposium on High Energy Physics and the XII Mexican School of Particles and Fields. AIP Conference Proceedings, Volume 917, pp. 130-137 (2007). (AIPC Homepage)
Publication Date:
06/2007
Origin:
AIP
PACS Keywords:
Canonical quantization, Particle-theory and field-theory models of the early Universe, Quantum cosmology
DOI:
10.1063/1.2751949
Bibliographic Code:
2007AIPC..917..130B

Abstract

Quantum gravity places entirely new challenges on the formulation of a consistent theory as well as on an extraction of potentially observable effects. Quantum corrections due to the gravitational field are commonly expected to be tiny because of the smallness of the Planck length. However, a consistent formulation now shows that key features of quantum gravity imply magnification effects on correction terms which are especially important in cosmology with its long stretches of evolution. After a review of the salient features of recent canonical quantizations of gravity and their implications for the quantum structure of space-time a new example for potentially observable effects is given.
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