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Dias, Mafalda, Raquel, Ribeiro H and Seery, David (2013) Scale-dependent bias from multiple-field inflation. Physical Review D, 87. p. 107301. ISSN 1550-7998
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Official URL: http://dx.doi.org/10.1103/PhysRevD.87.107301
Abstract
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.
Item Type: | Article |
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Schools and Departments: | School of Mathematical and Physical Sciences > Physics and Astronomy |
Subjects: | Q Science > QB Astronomy > QB0980 Cosmogony. Cosmology |
Depositing User: | Mafalda Dias |
Date Deposited: | 23 May 2014 09:29 |
Last Modified: | 22 Mar 2017 02:03 |
URI: | http://srodev.sussex.ac.uk/id/eprint/48792 |
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