306 citations · 2.9k across the 108 of their papers we have counts for
5 papers · 1 filter
Dark Matter, Discreteness and Collision Error in Cosmological N-Body Simulations
Randall J. Splinter, Adrian L. Melott, Sergei F. Shandarin
We report on a series of tests of agreement between three types of N-body simulations: PM, PM, and Tree codes. We find good agreement in both the individual and the statistical…
Non-local scaling in two-dimensional gravitational clustering
D. Munshi, L. Y. Chiang, P. Coles +1
Using an ensemble of high resolution 2D numerical simulations, we explore the scaling properties of cosmological density fluctuations in the non-linear regime. We study the scaling…
Scaling in Gravitational Clustering, 2D and 3D Dynamics
D. Munshi, F. Bernardeau, A. L. Melott +1
Perturbation Theory (PT) applied to a cosmological density field with Gaussian initial fluctuations suggests a specific hierarchy for the correlation functions when the variance is…
Fundamental Discreteness Limitations of Cosmological N-Body Clustering Simulations
Randall J. Splinter, Adrian L. Melott, Sergei F. Shandarin +1
We explore some of the effects that discreteness and two-body scattering may have on N-body simulations with ``realistic'' cosmological initial conditions. We use an identical subs…
Non-Linear Evolution of the Bispectrum of Cosmological Perturbations
Roman Scoccimarro, Stephane Colombi, J. N. Fry +3
The bispectrum, the three-point function of density fluctuations in Fourier space, is the lowest order statistic that carries information about the spatial coherence of large-scale…