3 papers
astro-ph.CO2020
The anisotropy of the power spectrum in periodic cosmological simulations
Gábor Rácz, István Szapudi, István Csabai +1
The classical gravitational force on a torus is anisotropic and always lower than Newton's law. We demonstrate the effects of periodicity in dark matter only -body simul…
astro-ph.CO2020
A common explanation of the Hubble tension and anomalous cold spots in the CMB
András Kovács, Róbert Beck, István Szapudi +3
The standard cosmological paradigm narrates a reassuring story of a universe currently dominated by an enigmatic dark energy component. Disquietingly, its universal explaining powe…
astro-ph.CO2018
StePS: A Multi-GPU Cosmological N-body Code for Compactified Simulations
Gábor Rácz, István Szapudi, László Dobos +2
We present the multi-GPU realization of the StePS (Stereographically Projected Cosmological Simulations) algorithm with MPI-OpenMP-CUDA hybrid parallelization and nearly ideal scal…