Large non-Gaussian Halo Bias from Single Field Inflation

Details Large non-Gaussian Halo Bias from Single Field Inflation Large non-Gaussian Halo Bias from Single Field Inflation

2012-04-19

arxiv.org/abs/1204.4409v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

30 pages, 14 figures

Scientific paper

We calculate Large Scale Structure observables for non-Gaussianity arising from non-Bunch-Davies initial states in single field inflation. These scenarios can have substantial primordial non-Gaussianity from squeezed (but observable) momentum configurations. They generate a term in the halo bias that may be more strongly scale-dependent than the contribution from the local ansatz. We also discuss theoretical considerations required to generate an observable signature.

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