Inflation and the semiclassical dynamics of a conformal scalar field
Journal Article
·
· Physical Review. D, Particles Fields
- Dipartimento di Fisica, Universita di Bologna, and I.N.F.N., Sezione di Bologna, via Irnerio 46, 40126 Bologna (Italy)
We derive the semiclassical evolution of massless conformally coupled scalar matter in the de Sitter space-time from the Born-Oppenheimer reduction of the Wheeler-DeWitt equation. We find a remarkable difference with respect to the minimally coupled case: the effect of the quantum gravitational corrections does not depend on the momentum of the scalar mode up to second order in the Planck length and, therefore, there are no relevant corrections to the dispersion relation.
- OSTI ID:
- 21039122
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 4 Vol. 77; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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