{"paper":{"title":"Constraints on single-field inflation with WMAP, SPT and ACT data -- A last-minute stand before Planck","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-ph"],"primary_cat":"astro-ph.CO","authors_text":"Cheng cheng, Qing-Guo Huang, Yin-Zhe Ma","submitted_at":"2013-03-19T06:58:13Z","abstract_excerpt":"We constrain models of single field inflation with the pre-\\textit{Planck} CMB data. The data used here is the 9-year Wilkinson Microwave Anisotropy Probe (\\textit{WMAP}) data, South Pole Telescope (SPT) data and Atacama Cosmology Telescope (ACT) data. By adding in running of spectral index parameter, we find that the $\\chi^2$ is improved by a factor of $\\Delta \\chi^2=8.44$, which strongly indicates the preference of this parameter from current data. In addition, we find that the running of spectral index $\\alpha_s$ does not change very much even if we switch to different pivot scales, which s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.4497","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}