Perturbation spectrum in inflation with a cutoff - art. no. 103501

Citation
A. Kempf et Jc. Niemeyer, Perturbation spectrum in inflation with a cutoff - art. no. 103501, PHYS REV D, 6410(10), 2001, pp. 3501
Citations number
22
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW D
ISSN journal
0556-2821 → ACNP
Volume
6410
Issue
10
Year of publication
2001
Database
ISI
SICI code
0556-2821(20011115)6410:10<3501:PSIIWA>2.0.ZU;2-S
Abstract
It has been pointed out that the perturbation spectrum predicted by inflati on may be sensitive to a natural ultraviolet cutoff, thus potentially provi ding an experimentally accessible window to aspects of Planck scale physics . A priori, a natural ultraviolet cutoff could take any form, but a fairly general classification of possible Planck scale cutoffs has been given. One of those categorized cutoffs, also appearing in various studies of quantum gravity and string theory, has recently been implemented into the standard inflationary scenario. Here, we continue this approach by investigating it s effects on the predicted perturbation spectrum. We find that the size of the effect depends sensitively on the scale separation between cutoff and h orizon during inflation.