TY - JOUR
T1 - Cosmological perturbations and short distance physics from noncommutative geometry
AU - Lizzi, Fedele
AU - Mangano, Gianpiero
AU - Miele, Gennaro
AU - Peloso, Marco
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2002/6/1
Y1 - 2002/6/1
N2 - We investigate the possible effects on the evolution of perturbations in the inflationary epoch due to short distance physics. We introduce a suitable non local action for the inflaton field, suggested by Noncommutative Geometry, and obtained by adopting a generalized star product on a Friedmann-Robertson- Walker background. In particular, we study how the presence of a length scale where spacetime becomes noncommutative affects the gaussianity and isotropy properties of fluctuations, and the corresponding effects on the Cosmic Microwave Background spectrum.
AB - We investigate the possible effects on the evolution of perturbations in the inflationary epoch due to short distance physics. We introduce a suitable non local action for the inflaton field, suggested by Noncommutative Geometry, and obtained by adopting a generalized star product on a Friedmann-Robertson- Walker background. In particular, we study how the presence of a length scale where spacetime becomes noncommutative affects the gaussianity and isotropy properties of fluctuations, and the corresponding effects on the Cosmic Microwave Background spectrum.
KW - Cosmology of Theories beyond the SM
KW - Non-Commutative Geometry
UR - https://www.scopus.com/pages/publications/23044444676
UR - https://www.scopus.com/inward/citedby.url?scp=23044444676&partnerID=8YFLogxK
U2 - 10.1088/1126-6708/2002/06/049
DO - 10.1088/1126-6708/2002/06/049
M3 - Article
AN - SCOPUS:23044444676
SN - 1029-8479
VL - 6
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 6
M1 - 049
ER -