Primordial squeezed non-Gaussianity and observables in the CMB
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Primordial squeezed non-Gaussianity and observables in the CMB Antony Lewis http://cosmologist.info/ Lewis arXiv:1204.5018 see also Creminelli et al astro-ph/0405428, arXiv:1109.1822, Bartolo et al arXiv:1109.2043 Lewis arXiv:1107.5431 Lewis, Challinor & Hanson arXiv:1101.2234 Pearson, Lewis & Regan arXiv:1201.1010 Benasque August 2012
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Primordial squeezed non-Gaussianity and observables in the CMB. Antony Lewis http://cosmologist.info/. Lewis arXiv:1204.5018 see also Creminelli et al astro-ph /0405428, arXiv:1109.1822, Bartolo et al arXiv:1109.2043 Lewis arXiv:1107.5431 Lewis , Challinor & Hanson arXiv:1101.2234 - PowerPoint PPT Presentation
Transcript of Primordial squeezed non-Gaussianity and observables in the CMB
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Primordial squeezed non-Gaussianity and observables in the CMBAntony Lewishttp://cosmologist.info/
Lewis arXiv:1204.5018see also Creminelli et al astro-ph/0405428, arXiv:1109.1822, Bartolo et al arXiv:1109.2043
Lewis arXiv:1107.5431Lewis, Challinor & Hanson arXiv:1101.2234Pearson, Lewis & Regan arXiv:1201.1010
Benasque August 2012CMB temperature
End of inflationLast scattering surfacegravity+pressure+diffusion
Perturbations super-horizonSub-horizon acoustic oscillations+ modes that are still super-horizon
14 000 Mpcz~1000z=0
Observed CMB temperature power spectrum
ObservationsConstrain theory of early universe+ evolution parameters and geometryWMAP 7
Keisler et al, arXiv:1105.3182Larson et al, arXiv:1001.46354Beyond Gaussianity general possibilitiesGaussian + statistical isotropy Higher-point correlationsFlat sky approximation:BispectrumTrispectrum
N-spectra
+++Equilateral=b>0b0b
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