High-resolution investigation of the AvERA cosmological code: Comparison of DTFE and JAX-based density estimation algorithms and development of dark matter models

Szalkai, Dóra\(^1\); Csabai, István\(^1\); Dobos, László\(^{1}\); Szapudi, István\(^{1,2}\) (2026.04.01 - 2026.06.30)

\(^1\) Eötvös Loránd University, Budapest, Hungary.
\(^2\) University of Hawaii, Honolulu, Hawaii, USA.

Abstract: The goal of this project is to test the numerical accuracy of the AvERA (Average Expansion Rate Approximation) code in a high-resolution environment. We will investigate the impact of density estimation methods (DTFE vs. CIC/JAX-like) on the expansion rate and the presence of the negative ISW effect. During the research, we will implement a unique dark matter model into the AvERA framework, for which the computational capacity of the Wigner GPU cluster is essential.

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