Scale-dependent bias from primordial non-Gaussianity with trispectrum

Abstract

We study the scale-dependent bias of the halo power spectrum arising from primordial non-Gaussianity. We present an analytic result of the halo bias including up to the trispectrum contributions. We find that the scale-dependent bias opens a new possibility of probing the relation between the non-linearity parametersfNL and τNL. © 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS.