349 citations · 942 across the 16 of their papers we have counts for
8 papers · 1 filter
Dominated-Convergence Failure in Cosmological Perturbation Theory and a Numerical Foundation for BBGKY+ZA
Svetlin V. Tassev
A common ingredient in cosmological perturbation theory (PT) is the expansion of the dark matter overdensity in the Lagrangian displacement , which amounts to enforcing mass…
sCOLA: The N-body COLA Method Extended to the Spatial Domain
Svetlin Tassev, Daniel J. Eisenstein, Benjamin D. Wandelt +1
We present sCOLA -- an extension of the N-body COmoving Lagrangian Acceleration (COLA) method to the spatial domain. Similar to the original temporal-domain COLA, sCOLA is an N-bod…
N-point Statistics of Large-Scale Structure in the Zel'dovich Approximation
Svetlin Tassev
Motivated by the results presented in a companion paper, here we give a simple analytical expression for the matter n-point functions in the Zel'dovich approximation (ZA) both in r…
Lagrangian or Eulerian; Real or Fourier? Not All Approaches to Large-Scale Structure Are Created Equal
Svetlin Tassev
We present a pedagogical systematic investigation of the accuracy of Eulerian and Lagrangian perturbation theories of large-scale structure. We show that significant differences ex…
Solving Large Scale Structure in Ten Easy Steps with COLA
Svetlin Tassev, Matias Zaldarriaga, Daniel Eisenstein
We present the COmoving Lagrangian Acceleration (COLA) method: an N-body method for solving for Large Scale Structure (LSS) in a frame that is comoving with observers following tra…
Towards an Optimal Reconstruction of Baryon Oscillations
Svetlin Tassev, Matias Zaldarriaga
The Baryon Acoustic Oscillations (BAO) in the large-scale structure of the universe leave a distinct peak in the two-point correlation function of the matter distribution. That aco…