Large non-Gaussian halo bias from single field inflation

被引：32

作者：

Agullo, Ivan ^{[1
]}

Shandera, Sarah ^{[1
]}

机构：

[1] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2012年 / 09期

关键词：

power spectrum; inflation; non-gaussianity; PRIMORDIAL NON-GAUSSIANITY; TRANS-PLANCKIAN PHYSICS; FLUCTUATIONS; SCALE; CREATION;

D O I：

10.1088/1475-7516/2012/09/007

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页数：25

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