Scale-dependent bias from the primordial non-Gaussianity with a Gaussian-squared field

Details Scale-dependent bias from the primordial non-Gaussianity with a Gaussian-squared field Scale-dependent bias from the primordial non-Gaussianity with a Gaussian-squared field

2011-08-29

arxiv.org/abs/1108.5569v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

9 pages, 1 figure, comments are welcome

Scientific paper

We investigate the halo bias in the case where the primordial curvature fluctuations, $\Phi$, are sourced from both a Gaussian random field and a Gaussian-squared field, as $\Phi({\bf x}) = \phi({\bf x}) + \psi({\bf x})^2 - <\psi({\bf x})^2>$, so-called "ungaussiton model". We employ the peak-background split formula and find a new scale-dependence in the halo bias induced from the Gaussian-squared field.

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