Inflation model with lower multipoles of the CMB suppressed
نویسندگان
چکیده
منابع مشابه
Punctuated inflation and the low CMB multipoles
We investigate inflationary scenarios driven by a class of potentials which are similar in form to those that arise in certain minimal supersymmetric extensions of the standard model. We find that these potentials allow a brief period of departure from inflation sandwiched between two stages of slow roll inflation. We show that such a background behavior leads to a step like feature in the scal...
متن کاملInstability of reconstruction of the low CMB multipoles
We present an analysis of the cross-correlation for the WMAP ILC(III) low multipoles and foregrounds and show that these correlations are very high. By analysis of the 10 Monte Carlo simulations of the CMB-foreground separation presented by Eriksen et al. 2004a, we show that most likely the Lagrangian Internal Linear Combination method (LILC) produced negative shift of the distribution function...
متن کاملConstraining Primordial Magnetic Field from CMB Anisotropies at Higher Multipoles
The cosmological magnetic field is one of the important physical quantities which affect strongly the cosmic microwave background (CMB) power spectrum. Recent CMB observations have been extended to higher multipoles l &1000, and they resultantly exhibit an excess power than the standard model prediction in cosmological theory which best fits the Wilkinson Microwave Anisotropy Probe (WMAP) data ...
متن کاملthe use of appropriate madm model for ranking the vendors of mci equipments using fuzzy approach
abstract nowadays, the science of decision making has been paid to more attention due to the complexity of the problems of suppliers selection. as known, one of the efficient tools in economic and human resources development is the extension of communication networks in developing countries. so, the proper selection of suppliers of tc equipments is of concern very much. in this study, a ...
15 صفحه اولProbing inflation with CMB polarization : weak lensing effect on the covariance of CMB spectra
CMB anisotropies are modified by the weak lensing effect of intervening large scale structures on the photon path from the last scattering surface to the observer. This has to be accounted for when observational data of sensitive experiments are used to constrain cosmological models. A common approximation to analyze the CMB angular power spectra is to include only the Gaussian part of the lens...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physics Letters B
سال: 2003
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2003.08.005