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arXiv · 1206.3306

Non-Gaussianity and Excursion Set Theory: Halo Bias

Peter Adshead·Eric J. Baxter·Scott Dodelson·Adam Lidz
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Abstract

We study the impact of primordial non-Gaussianity generated during inflation on the bias of halos using excursion set theory. We recapture the familiar result that the bias scales as $k^{-2}$ on large scales for local type non-Gaussianity but explicitly identify the approximations that go into this conclusion and the corrections to it. We solve the more complicated problem of non-spherical halos, for which the collapse threshold is scale dependent.

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Peter Adshead, Eric J. Baxter, Scott Dodelson, Adam Lidz. 2012-09-26. Non-Gaussianity and Excursion Set Theory: Halo Bias. https://doi.org/10.1103/physrevd.86.063526

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