Results 51 to 60 of about 22,410,258 (325)
Primordial Non-Gaussianities [PDF]
Progress of Theoretical Physics Supplement, 2011 Invited talk at YKIS (Yukawa International Seminar) 2010: "Cosmology -The Next Generation-", 28 June - 2 July 2010, Kyoto ...
openaire +3 more sources
Multiple field inflation and primordial non-Gaussianity
, 2023 This thesis is based on research into primordial non-Gaussianity produced during inflation. It focuses on predictions of the bispectrum from D3-brane inflation, and constraints on the squeezed-trispectrum derived from observational ...
Billy Marzouk (5596277)
core +1 more source
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
openaire +2 more sources
Characterization of non-Gaussianity in the snow distributions of various landscapes [PDF]
The CryosphereSeasonal snowpack is an important predictor of the water resources available in the following spring and early-summer melt season. Total basin snow water equivalent (SWE) estimation usually requires a form of statistical analysis that is implicitly built
N. Ohara +8 more
doaj +1 more source
Primordial black holes and local non-Gaussianity in canonical inflation [PDF]
Physical Review D, 2018 Primordial black holes (PBHs) cannot be produced abundantly enough to be the dark matter in canonical single-field inflation under slow roll. This conclusion is robust to local non-Gaussian correlations between long- and short-wavelength curvature modes,
S. Passaglia, Wayne Hu, H. Motohashi
semanticscholar +1 more source
Imprints of primordial non-Gaussianity on gravitational wave spectrum [PDF]
Physical Review D, 2018 Although Cosmic Microwave Background and Large Scale Structure probe the largest scales of our universe with ever increasing precision, our knowledge about the smaller scales is still very limited other than the bounds on Primordial Black Holes.
Caner Unal
semanticscholar +1 more source
Non-Gaussianity from symmetry [PDF]
Journal of Cosmology and Astroparticle Physics, 2008 26 pages, 1 figure;v2 discussion and references added.
Suyama, Teruaki, Takahashi, Fuminobu
openaire +2 more sources
Primordial non-Gaussianity in supersolid inflation
Journal of High Energy Physics, 2021 We study primordial non-gaussianity in supersolid inflation. The dynamics of supersolid is formulated in terms of an effective field theory based on four scalar fields with a shift symmetric action minimally coupled with gravity.
Marco Celoria +3 more
doaj +1 more source
Quantifying the non-Gaussianity in the EoR 21-cm signal through bispectrum [PDF]
, 2017 The epoch of reionization (EoR) 21-cm signal is expected to be highly non-Gaussian in nature and this non-Gaussianity is also expected to evolve with the progressing state of reionization.
S. Majumdar +5 more
semanticscholar +1 more source
Towards the physical vacuum of cosmic inflation
Physics Letters B, 2016 There have been long debates about the initial conditions of inflationary perturbations. In this work we explicitly show the decay of excited states during inflation via interactions from the renormalization group point of view. For this purpose, we note
Hongliang Jiang, Yi Wang
doaj +1 more source