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Title:
The role of space-time structure in effective theory and cosmology
Authors:
Bojowald, Martin
Affiliation:
The Pennsylvania State University, Institute for Gravitational Physics and Geometry 104 Davey Lab, University Park, PA 16802, USA
Publication:
THEORETICAL HIGH ENERGY PHYSICS: International Workshop on Theoretical High Energy Physics. AIP Conference Proceedings, Volume 939, pp. 138-146 (2007). (AIPC Homepage)
Publication Date:
10/2007
Origin:
AIP
PACS Keywords:
Quantum gravity, Self-gravitating systems; continuous media and classical fields in curved spacetime, Particle-theory and field-theory models of the early Universe, Quantum cosmology
DOI:
10.1063/1.2803798
Bibliographic Code:
2007AIPC..939..138B

Abstract

Quantum gravity generally gives rise to a fundamental space-time structure different from the classical continuum picture. This is incorporated in the form of states representing quantum geometry. Effective equations derived to evaluate the quantum theory by including quantum corrections in the classical equations must take the general form of quantum states, reflecting space-time structure, into account. Unlike low energy effective actions, proper effective equations of canonical quantum gravity show effects whose magnitude can be much larger than expected on dimensional grounds.
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