Results 71 to 80 of about 22,410,258 (325)
On the non-Gaussianity from recombination [PDF]
Journal of Cosmology and Astroparticle Physics, 2009 The non-linear effects operating at the recombination epoch generate a non-Gaussian signal in the CMB anisotropies. Such a contribution is relevant because it represents a major part of the second-order radiation transfer function which must be determined in order to have a complete control of both the primordial and non-primordial part of non ...
BARTOLO, NICOLA, A. RIOTTO
openaire +3 more sources
On Minkowski Functionals of CMB polarization
Physics Letters B, 2017 CMB polarization data is usually analyzed using E and B modes because they are scalar quantities under rotations along the lines of sight and have distinct physical origins.
Pravabati Chingangbam +3 more
doaj +1 more source
Non-Gaussianity in loop quantum cosmology [PDF]
, 2017 We extend the phenomenology of loop quantum cosmology (LQC) to second order in perturbations. Our motivation is twofold. On the one hand, since LQC predicts a cosmic bounce that takes place at the Planck scale, the second-order contributions could be ...
I. Agullo, B. Bolliet, V. Sreenath
semanticscholar +1 more source
On the Importance of Non-Gaussianity in Chlorophyll Fluorescence Imaging
Remote Sensing, 2023 We propose a mathematical study of the statistics of chlorophyll fluorescence indices. While most of the literature assumes Gaussian distributions for these indices, we demonstrate their fundamental non-Gaussian nature. Indeed, while the noise in the raw
Angelina El Ghaziri +3 more
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Quantum non-Gaussianity criteria based on vacuum probabilities of original and attenuated state
New Journal of Physics, 2021 Quantum non-Gaussian states represent an important class of highly non-classical states whose preparation requires quantum operations or measurements beyond the class of Gaussian operations and statistical mixing.
Jaromír Fiurášek +2 more
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Planck 2015 results. XVII. Constraints on primordial non-Gaussianity [PDF]
, 2015 The Planck nominal mission cosmic microwave background (CMB) maps yield unprecedented constraints on primordial non-Gaussianity (NG). Using three optimal bispectrum estimators, separable template-fitting (KSW), binned, and modal, we obtain consistent ...
P. Ade +240 more
semanticscholar +1 more source
Is the Universe Normal? Constraining Scale-Dependent Primordial Non-Gaussianity. [PDF]
, 2012 Non-Gaussianity is a potentially powerful probe of inflationary physics in the very early universe. The detection of significant primordial non-Gaussianity would be a serious challenge to the simplest models of inflation. Models with non-Gaussianity that
Becker, Adam M.
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HeliyonThe time interval between two consecutive R-peaks in an electrocardiography signal is called the RR interval (RRI), and its non-Gaussianity is a valuable marker for assessing cardiovascular disease risk.
Naoki Hagiyama +3 more
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Graviton non-gaussianity in α-vacuum
Journal of High Energy Physics, 2022 We compute the leading order non-Gaussianity, i.e., the bispectrum, of the tensor perturbation in the general α-vacuum on de Sitter space in general relativity.
Sugumi Kanno, Misao Sasaki
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Multitracing anisotropic non-Gaussianity with galaxy shapes [PDF]
, 2016 Correlations between intrinsic galaxy shapes on large scales arise due to the effect of the tidal field of the large-scale structure. Anisotropic primordial non-Gaussianity induces a distinct scale-dependent imprint in these tidal alignments on large ...
N. .. Chisari +3 more
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