Double soft limits of cosmological correlations

Journal Article · Sun Mar 01 00:00:00 EST 2015 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2015/03/025· OSTI ID:22524861

Mirbabayi, Mehrdad; Zaldarriaga, Matias ^[1]

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1. School of Natural Sciences, Institute for Advanced Study, 1 Einstein Drive, Princeton, NJ (United States)

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.

• OSTI ID: 22524861
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2015, Issue 03; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
CORRELATION FUNCTIONS
CORRELATIONS
COSMOLOGY
NONLINEAR PROBLEMS
SYMMETRY
UNIVERSE
WAVE FUNCTIONS
WAVELENGTHS