On the physical significance of infra-red corrections to inflationary observables
Journal Article
·
· Journal of Cosmology and Astroparticle Physics
- Dipartimento di Fisica, Universita di Padova, Via Marzolo, 8, I-35131 Padua (Italy)
- INFN, Sezione di Padova, Via Marzolo, 8, I-35131 Padua (Italy)
- Centre for Theoretical Cosmology, Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA (United Kingdom)
Inflationary observables, like the power spectrum, computed at one-order and higher-order loop level seem to be plagued by large infra-red corrections. In this short note, we point out that these large infra-red corrections appear only in quantities which are not directly observable. This is in agreement with general expectations concerning infra-red effects.
- OSTI ID:
- 22137760
- Journal Information:
- Journal of Cosmology and Astroparticle Physics, Vol. 2008, Issue 01; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
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