no code implementations • 25 Jan 2021 • Theodore Steele, Tobias Baldauf
The Effective Field Theory of Large Scale Structure (EFTofLSS) has emerged as a consistent method for describing LSS on large scales by introducing counterterms that account for the effects of small-scale dynamics.
Cosmology and Nongalactic Astrophysics High Energy Physics - Theory
no code implementations • 28 Dec 2020 • Tobias Baldauf, Sandrine Codis, Vincent Desjacques, Christophe Pichon
Our predictions are in good agreement with the Lagrangian clustering of dark matter proto-haloes reconstructed from N-body simulations.
Cosmology and Nongalactic Astrophysics
1 code implementation • 21 Apr 2017 • Marcel Schmittfull, Tobias Baldauf, Matias Zaldarriaga
In our idealized dark matter simulations, the method improves the BAO signal-to-noise ratio by a factor of 2. 7 at $z=0$ and by a factor of 2. 5 at $z=0. 6$, improving standard BAO reconstruction by $70\%$ at $z=0$ and $30\%$ at $z=0. 6$, and matching the optimal BAO signal and signal-to-noise ratio of the linear density in the same volume.
Cosmology and Nongalactic Astrophysics
no code implementations • 3 Nov 2015 • Titouan Lazeyras, Christian Wagner, Tobias Baldauf, Fabian Schmidt
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
no code implementations • 7 Oct 2014 • Zvonimir Vlah, Uroš Seljak, Tobias Baldauf
We find that the analytic calculations are in a good agreement with the LPT simulations, but when compared to full N-body simulations, we find that while one loop calculations improve upon the Zel'dovich approximation in the power spectrum, they still significantly lack power.
Cosmology and Nongalactic Astrophysics
