Large Scale Anisotropic Bias from Primordial non-Gaussianity

Understand

In this work we study the large scale structure bias in models of anisotropic inflation.

• We use the Peak Background Splitting method in Excursion Set Theory to find the scale-dependent bias.
• We show that the amplitude of the bias is modified by a direction- dependent factor.
• In the specific anisotropic inflation model which we study, the scale- dependent bias vanishes at leading order when the long wavelength mode in squeezed limit is aligned with the anisotropic direction in the sky.