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Title:
Radiation equation of state and loop quantum gravity corrections
Authors:
Bojowald, Martin; Das, Rupam
Affiliation:
AA(Institute for Gravitational Physics and Geometry, The Pennsylvania State University, 104 Davey Lab, University Park, Pennsylvania 16802, USA), AA(Institute for Gravitational Physics and Geometry, The Pennsylvania State University, 104 Davey Lab, University Park, Pennsylvania 16802, USA)
Publication:
Physical Review D, vol. 75, Issue 12, id. 123521 (PhRvD Homepage)
Publication Date:
06/2007
Origin:
APS
PACS Keywords:
Mathematical and relativistic aspects of cosmology, Loop quantum gravity, quantum geometry, spin foams
DOI:
10.1103/PhysRevD.75.123521
Bibliographic Code:
2007PhRvD..75l3521B

Abstract

The equation of state for radiation is derived in a canonical formulation of the electromagnetic field. This allows one to include correction terms expected from canonical quantum gravity and to infer implications to the universe evolution in radiation dominated epochs. Corrections implied by quantum geometry can be interpreted in physically appealing ways, relating to the conformal invariance of the classical equations.
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