TY - GEN
T1 - A new realization of a low quadrupole universe
AU - Lee, Wo Lung
PY - 2008
Y1 - 2008
N2 - We propose that cosmological density perturbation may originate from passive fluctuations of the inflaton, which are induced by colored quantum noise due to the coupling of the inflaton to the quantum environment. At small scales, the fluctuations grow with time to become nearly scale-invariant. However, the larger-scale modes cross out the horizon earlier and do not have enough time to grow, thus resulting in a suppression of the density perturbation. This may explain the observed low quadrupole in the CMB anisotropy data.
AB - We propose that cosmological density perturbation may originate from passive fluctuations of the inflaton, which are induced by colored quantum noise due to the coupling of the inflaton to the quantum environment. At small scales, the fluctuations grow with time to become nearly scale-invariant. However, the larger-scale modes cross out the horizon earlier and do not have enough time to grow, thus resulting in a suppression of the density perturbation. This may explain the observed low quadrupole in the CMB anisotropy data.
KW - Cosmic microwave background
KW - Inflationary cosmology
KW - Large-scale structure of the Universe
UR - http://www.scopus.com/inward/record.url?scp=84892964481&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84892964481&partnerID=8YFLogxK
U2 - 10.1142/9789812834300_0220
DO - 10.1142/9789812834300_0220
M3 - Conference contribution
AN - SCOPUS:84892964481
SN - 9812834265
SN - 9789812834263
T3 - 11th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Gravitation and Relativistic Field Theories - Proc. of the MG11 Meeting on General Relativity
SP - 1653
EP - 1658
BT - 11th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Gravitation and Relativistic Field Theories - Proc. of the MG11 Meeting on General Relativity
PB - World Scientific Publishing Co. Pte Ltd
T2 - 11th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Gravitation and Relativistic Field Theories, MG 2006
Y2 - 23 July 2006 through 29 July 2006
ER -