{"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/searching-for-modified-growth-patterns-with","title":"Searching for modified growth patterns with tomographic surveys","arxiv_id":"0809.3791","date":"2008-09-23","proceeding":null,"authors":["Gong-Bo Zhao","Levon Pogosian","Alessandra Silvestri","Joel Zylberberg"],"abstract":"In alternative theories of gravity, designed to produce cosmic acceleration\nat the current epoch, the growth of large scale structure can be modified. We\nstudy the potential of upcoming and future tomographic surveys such as DES and\nLSST, with the aid of CMB and supernovae data, to detect departures from the\ngrowth of cosmic structure expected within General Relativity. We employ\nparametric forms to quantify the potential time- and scale-dependent variation\nof the effective gravitational constant, and the differences between the two\nNewtonian potentials. We then apply the Fisher matrix technique to forecast the\nerrors on the modified growth parameters from galaxy clustering, weak lensing,\nCMB, and their cross-correlations across multiple photometric redshift bins. We\nfind that even with conservative assumptions about the data, DES will produce\nnon-trivial constraints on modified growth, and that LSST will do significantly\nbetter.","url_abs":"http://arxiv.org/abs/0809.3791v2","url_pdf":"http://arxiv.org/pdf/0809.3791v2.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":"abstracts"},"code_links":[{"paper_slug":"searching-for-modified-growth-patterns-with","repo_url":"https://github.com/santiagocasas/mgcamb","is_official":0,"mentioned_in_paper":0,"mentioned_in_github":1,"framework":"none","reach":{"status":"ok"}}],"tasks":[{"task_slug":"clustering","task_name":"Clustering"}],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}