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Scale-dependent bias from multiple-field inflation

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posted on 2023-06-08, 17:24 authored by Mafalda Dias, Ribeiro H Raquel, David SeeryDavid Seery
We provide a formula for the scaling behaviour of the inflationary bispectrum in the 'squeezed' limit where one momentum becomes much smaller than the other two. This determines the scaling of the halo bias at low wavenumber and will be an important observable for the next generation of galaxy surveys. Our formula allows it to be predicted for the first time for a generic inflationary model with multiple light, canonically-normalized scalar fields.

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review D

ISSN

1550-7998

Publisher

American Physical Society

Volume

87

Page range

107301

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2014-05-23

First Open Access (FOA) Date

2016-11-28

First Compliant Deposit (FCD) Date

2014-09-08

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