CLASSIER computes cosmological perturbation spectra with non-cold relics using iterated integral equations and non-uniform fast Fourier transforms, matching a converged Boltzmann hierarchy to <0.01% in the matter power spectrum up to k=100 Mpc^-1 with substantial speedups.
A No-Truncation Approach to Cosmic Microwave Background Anisotropies
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
We offer a method of calculating the source term in the line-of-sight integral for cosmic microwave background anisotropies without using a truncated partial-wave expansion in the Boltzmann hierarchy.
fields
astro-ph.CO 1years
2025 1verdicts
CONDITIONAL 1representative citing papers
citing papers explorer
-
Rapid and accurate numerical evolution of linear cosmological perturbations with non-cold relics
CLASSIER computes cosmological perturbation spectra with non-cold relics using iterated integral equations and non-uniform fast Fourier transforms, matching a converged Boltzmann hierarchy to <0.01% in the matter power spectrum up to k=100 Mpc^-1 with substantial speedups.