Results 11 to 20 of about 6,708 (120)
Primordial non-Gaussianity and non-Gaussian covariance
Physical Review D, 2023 In the pursuit of primordial non-Gaussianities, we hope to access smaller scales across larger comoving volumes. At low redshift, the search for primordial non-Gaussianities is hindered by gravitational collapse, to which we often associate a scale $k_{\rm NL}$.
Thomas Flöss +2 more
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Journal of Cosmology and Astroparticle Physics, 2009 We study non-Gaussianity induced by a pseudo Nambu-Goldstone boson with a cosine-type scalar potential. We focus on how the non-Gaussianity is affected when the pseudo Nambu-Goldstone boson rolls down from near the top of the scalar potential where the deviation from a quadratic potential is large.
Kawasaki, Masahiro +2 more
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Inhomogeneous non-gaussianity [PDF]
Journal of Cosmology and Astroparticle Physics, 2012 We propose a method to probe higher-order correlators of the primordial density field through the inhomogeneity of local non-Gaussian parameters, such as f_NL, measured within smaller patches of the sky. Correlators between n-point functions measured in one patch of the sky and k-point functions measured in another patch depend upon the (n+k)-point ...
Byrnes, Christian T. +3 more
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Resonant non-gaussianity [PDF]
Journal of Cosmology and Astroparticle Physics, 2011 32 pages, 4 ...
Flauger, Raphael, Pajer, Enrico
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Non-Gaussianity After BICEP2 [PDF]
Physical Review Letters, 2014 5 pages, 2 figures. References and minor clarifications added. Version published in Phys.
D'Amico, Guido, Kleban, Matthew
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Non-Gaussianity from preheating [PDF]
Physical Review Letters, 2005 4 pages ReVTeX4, discussion and references added, conclusions ...
Enqvist, Kari +4 more
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Non-Gaussianity in a matter bounce [PDF]
Journal of Cosmology and Astroparticle Physics, 2009 10 pages, 6 figures, 2 references ...
Cai, Yi-Fu +3 more
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Non-Gaussian Process Regression
CoRR, 2022 Standard GPs offer a flexible modelling tool for well-behaved processes. However, deviations from Gaussianity are expected to appear in real world datasets, with structural outliers and shocks routinely observed. In these cases GPs can fail to model uncertainty adequately and may over-smooth inferences.
Yaman Kindap, Simon J. Godsill
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Gaussian and Non-Gaussian operations on non-Gaussian state: engineering non-Gaussianity
Quantum Measurements and Quantum Metrology, 2014 AbstractMultiple photon subtraction applied to a displaced phase-averaged coherent state, which is a non-Gaussian classical state, produces conditional states with a non trivial (positive) Glauber-Sudarshan Prepresentation. We theoretically and experimentally demonstrate that, despite its simplicity, this class of conditional states cannot be fully ...
S. Olivares, A. Allevi, M. Bondani
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Non-Gaussianity in the curvaton scenario [PDF]
Physical Review D, 2004 LaTeX file, 8 pages. Some typos corrected. In Sec. IIIA non-local gradient terms explicitly accounted for in the final non-linear parameter and references ...
BARTOLO, NICOLA +2 more
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