TAPIR Seminar

On the Statistics of Biased Tracers in the Effective Field Theory of Large Scale Structures

Zvonimir Vlah, Postdoctoral Fellow, Physics, Stanford University,

With the completion of the Planck satellite, in order to continue to gather cosmological information it has become crucial to understand the Large Scale Structures (LSS) of the universe to percent accuracy. The Effective Field Theory of LSS (EFTofLSS) is a novel theoretical framework that aims to develop an analytic understanding of LSS at long distances, where inhomogeneities are small. We present the further developed description of biased tracers in the EFTofLSS to account for the effect of baryonic physics and primordial non-Gaussianities, finding that new bias coefficients are required. Then, restricting to dark matter with Gaussian initial conditions, we present the prediction of the EFTofLSS for the one-loop two-point functions, and for the tree-level three-point functions. Several new bias coefficients are needed in the EFTofLSS, even though their contribution at a given order can be degenerate and the same parameters contribute to multiple observables. We will present the comparison of our results with the output of N-body simulations.

Event Sponsors:

Theoretical AstroPhysics Including Relativity and Cosmology (TAPIR) - More events from this Sponsor

For more information, please contact JoAnn Boyd by phone at 4280 or by email at [email protected].