Advancing the matter bispectrum estimation of large-scale structure: a comparison of dark matter codes

Understand

Cosmological information from forthcoming galaxy surveys, such as LSST and Euclid, will soon exceed that available from the CMB.

• Higher order correlation functions, like the bispectrum, will be indispensable for realising this potential.
• The interpretation of this data faces many challenges because gravitational collapse of matter is a complex non-linear process, typically modelled by computationally expensive N-body simulations.
• Proposed alternatives using fast dark matter codes (e.g.