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An $n$-th order Lagrangian Forward Model for Large-Scale Structure
A forward model of matter and biased tracers at arbitrary order in Lagrangian perturbation theory (LPT) is presented.
Cosmology and Nongalactic Astrophysics
Information content in the redshift-space galaxy power spectrum and bispectrum
We present a Fisher information study of the statistical impact of galaxy bias and selection effects on the estimation of key cosmological parameters from galaxy redshift surveys; in particular, the angular diameter distance, Hubble parameter, and linear growth rate at a given redshift, the cold dark matter density, and the tilt and running of the primordial power spectrum.
Selection bias
Cosmology and Nongalactic Astrophysics
A rigorous EFT-based forward model for large-scale structure
We further show that the information captured by this likelihood is equivalent to the combination of the next-to-leading order galaxy power spectrum, leading-order bispectrum, and BAO reconstruction.
Cosmology and Nongalactic Astrophysics
Precision measurement of the local bias of dark matter halos
We present accurate measurements of the linear, quadratic, and cubic local bias of dark matter halos, using curved "separate universe" N-body simulations which effectively incorporate an infinite-wavelength overdensity.
Cosmology and Nongalactic Astrophysics
Separate Universe Simulations
The large-scale statistics of observables such as the galaxy density are chiefly determined by their dependence on the local coarse-grained matter density.
Cosmology and Nongalactic Astrophysics
