ScholarlyCommons

Title

Non-Gaussianity and Excursion Set Theory: Halo Bias

Author(s)

Peter Adshead, University of Chicago
Eric J. Baxter, University of Chicago
Scott Dodelson, University of Chicago
Adam Lidz, University of PennsylvaniaFollow

Document Type

Journal Article

Date of this Version

9-24-2012

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 nonspherical halos, for which the collapse threshold is scale-dependent.

Comments

Adshead, P., Baxter, E. J., Dodelson, S., & Lidz, A. (2012). Non-Gaussianity and Excursion Set Theory: Halo Bias. Physical Review D, 86(6), 063526. doi: 10.1103/PhysRevD.86.063526

© 2012 American Physical Society

Recommended Citation

Adshead, P., Baxter, E. J., Dodelson, S., & Lidz, A. (2012). Non-Gaussianity and Excursion Set Theory: Halo Bias. Retrieved from https://repository.upenn.edu/physics_papers/263