Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 3, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2015/03/025
Keywords
inflation; non-gaussianity
Funding
- NSF [PHY-1314311, PHY-0855425, AST-0907969, PHY-1213563]
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1409709] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [1521097, 1213563] Funding Source: National Science Foundation
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Correlation functions of two long-wavelength modes with several short-wavelength modes are shown to be related to lower order correlation functions, using the background wave method, and independently, by exploiting symmetries of the wavefunction of the Universe. These soft identities follow from the non-linear extension of the adiabatic modes of Weinberg, and their generalization by Hinterbichler et al. The extension is shown to be unique. A few checks of the identities are presented.
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