Solid soft theorems

Sadra Jazayeri

doi:10.1088/1475-7516/2019/06/011

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Solid soft theorems

2019-06-05

Sadra Jazayeri *

Enrico Pajer

Drian van der Woude

DOI：10.1088/1475-7516/2019/06/011

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Abstract

En 中文

We derive cosmological soft theorems for solids coupled to gravity. To this end, we first derive all cosmological adiabatic modes for solids, which display the interesting novelty of non-vanishing anisotropic stresses on large scales. Then, from the corresponding symmetries of the action of perturbations we compute the leading order related soft theorems using the operator product expansion. For the scalar bispectrum, we re-derive the result that Maldacena's consistency relation is recovered only upon angular averaging over the long mode direction. In addition, we find theorems for soft tensor and vector perturbations. In passing, we also clarify the derivation of these soft theorems in gauges where no residual diffeomorphisms exist.

Keywords:

cosmological perturbation theory

inflation

non-gaussianity

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Journal

Journal of Cosmology and Astroparticle Physics

IF:

5.9

Papers:

1.3W

Citations:

4.7W

Organization

Utrecht University

Scholars:

6.0W

Papers: 5.1W

Citations: 5.8W

University of Cambridge

Scholars:

7.7W

Papers: 7.1W

Citations: 13.7W

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