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2020

Non-linear perturbation theory extension of the Boltzmann code CLASS

Chudaykin, Anton, Ivanov, Mikhail M., Philcox, Oliver H. E. et al.

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We present a new open-source code that calculates one-loop power auto- and cross-power spectra for matter fields and biased tracers in real and redshift space.

These spectra incorporate all ingredients required for a direct application to data: non-linear bias, redshift-space distortions, infra-red resummation, counterterms, and the Alcock-Paczynski effect.
Our code is based on the Boltzmann solver CLASS and inherits its advantage: user friendliness, ease of modification, high speed, and simple interface with other software.
We present detailed descriptions of the theoretical model, the code structure, approximations, and accuracy tests.

Non-linear perturbation theory extension of the Boltzmann code CLASS · Around

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