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
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U2 - 10.1088/1126-6708/2002/06/049
DO - 10.1088/1126-6708/2002/06/049
M3 - Article
AN - SCOPUS:23044444676
SN - 1126-6708
VL - 6
SP - 1165
EP - 1180
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 6
ER -