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[ascl:2106.031] BiHalofit: Fitting formula of non-linear matter bispectrum

BiHalofit fits the matter bispectrum in the nonlinear regime calibrated by high-resolution cosmological N-body simulations of 41 cold dark matter models around the Planck 2015 best-fit parameters. The parameterization is similar to that in Halofit (ascl:1402.032). The simulation volume is sufficiently large to cover almost all measurable triangle bispectrum configurations in the universe, and the function is calibrated using one-loop perturbation theory at large scales. BiHaloFit predicts the weak-lensing bispectrum and will assist current and future weak-lensing surveys and cosmic microwave background lensing experiments.

Code site:
http://cosmo.phys.hirosaki-u.ac.jp/takahasi/codes_e.htm
Described in:
https://ui.adsabs.harvard.edu/abs/2020ApJ...895..113T
Bibcode:
2021ascl.soft06031T

Views: 372

ascl:2106.031
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