{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/aemulus-n-precise-predictions-for-matter-and","title":"Aemulus $ν$: Precise Predictions for Matter and Biased Tracer Power Spectra in the Presence of Neutrinos","arxiv_id":"2303.09762","date":"2023-03-17","proceeding":null,"authors":["Joseph DeRose","Nickolas Kokron","Arka Banerjee","Shi-Fan Chen","Martin White","Risa Wechsler","Kate Storey-Fisher","Jeremy Tinker","Zhongxu Zhai"],"abstract":"We present the Aemulus $\\nu$ simulations: a suite of 150 $(1.05 h^{-1}\\rm Gpc)^3$ $N$-body simulations with a mass resolution of $3.51\\times 10^{10} \\frac{\\Omega_{cb}}{0.3} ~ h^{-1} M_{\\odot}$ in a $w\\nu$CDM cosmological parameter space. The simulations have been explicitly designed to span a broad range in $\\sigma_8$ to facilitate investigations of tension between large scale structure and cosmic microwave background cosmological probes. Neutrinos are treated as a second particle species to ensure accuracy to $0.5\\, \\rm eV$, the maximum neutrino mass that we have simulated. By employing Zel'dovich control variates, we increase the effective volume of our simulations by factors of $10-10^5$ depending on the statistic in question. As a first application of these simulations, we build new hybrid effective field theory and matter power spectrum surrogate models, demonstrating that they achieve $\\le 1\\%$ accuracy for $k\\le 1\\, h\\,\\rm Mpc^{-1}$ and $0\\le z \\le 3$, and $\\le 2\\%$ accuracy for $k\\le 4\\, h\\,\\rm Mpc^{-1}$ for the matter power spectrum. We publicly release the trained surrogate models, and estimates of the surrogate model errors in the hope that they will be broadly applicable to a range of cosmological analyses for many years to come.","url_abs":"https://arxiv.org/abs/2303.09762v2","url_pdf":"https://arxiv.org/pdf/2303.09762v2.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"links_only","authors_date_abstract":"arXiv metadata, CC0 1.0 (https://info.arxiv.org/help/license), from the Kaggle arXiv metadata snapshot of 2026-09-12"},"code_links":[{"paper_slug":"aemulus-n-precise-predictions-for-matter-and","repo_url":"https://github.com/aemulusproject/aemulus_heft","is_official":1,"mentioned_in_paper":1,"mentioned_in_github":1,"framework":"none","reach":null},{"paper_slug":"aemulus-n-precise-predictions-for-matter-and","repo_url":"https://github.com/aemulusproject/aemulus_nu_public","is_official":1,"mentioned_in_paper":1,"mentioned_in_github":1,"framework":"none","reach":null},{"paper_slug":"aemulus-n-precise-predictions-for-matter-and","repo_url":"https://github.com/delonshen/aemulusnu_hmf","is_official":0,"mentioned_in_paper":0,"mentioned_in_github":1,"framework":"none","reach":null}],"tasks":[],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}