Beyond LIMD bias: a measurement of the complete set of third-order halo bias parameters

Understand

We present direct measurements of cubic bias parameters of dark matter halos from the halo-matter-matter-matter trispectrum.

• We measure this statistic efficiently by cross-correlating the halo field measured in N-body simulations with specific third-order nonlocal transformations of the initial density field in the same simulation.
• Together with the recent Abidi & Baldauf (2018), these are the first measurements of halo bias using the four-point function that have been reported to date.
• We also obtain constraints on the quadratic bias parameters.