{"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/an-emulator-based-halo-model-in-modified","title":"An emulator-based halo model in modified gravity -- I. The halo concentration-mass relation and density profile","arxiv_id":"2301.02970","date":"2023-01-08","proceeding":null,"authors":["Cheng-Zong Ruan","Carolina Cuesta-Lazaro","Alexander Eggemeier","Baojiu Li","Carlton M. Baugh","Christian Arnold","Sownak Bose","César Hernández-Aguayo","Pauline Zarrouk","Christopher T. Davies"],"abstract":"In this series of papers we present an emulator-based halo model for the non-linear clustering of galaxies in modified gravity cosmologies. In the first paper, we present emulators for the following halo properties: the halo mass function, concentration-mass relation and halo-matter cross-correlation function. The emulators are trained on data extracted from the \\textsc{FORGE} and \\textsc{BRIDGE} suites of $N$-body simulations, respectively for two modified gravity (MG) theories: $f(R)$ gravity and the DGP model, varying three standard cosmological parameters $\\Omega_{\\mathrm{m0}}, H_0, \\sigma_8$, and one MG parameter, either $\\bar{f}_{R0}$ or $r_{\\mathrm{c}}$. Our halo property emulators achieve an accuracy of $\\lesssim 1\\%$ on independent test data sets. We demonstrate that the emulators can be combined with a galaxy-halo connection prescription to accurately predict the galaxy-galaxy and galaxy-matter correlation functions using the halo model framework.","url_abs":"https://arxiv.org/abs/2301.02970v1","url_pdf":"https://arxiv.org/pdf/2301.02970v1.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":"an-emulator-based-halo-model-in-modified","repo_url":"https://github.com/chzruan/hm_emulator_paper1_figures","is_official":1,"mentioned_in_paper":1,"mentioned_in_github":0,"framework":"none","reach":null}],"tasks":[],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"syntology_url":null,"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}