{"paper":{"title":"Constraints on $\\Lambda$CDM Extensions from the SPT-3G 2018 $EE$ and $TE$ Power Spectra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. A. Stark, A. Cukierman, A. E. Gambrel, A. E. Lowitz, A. Foster, A. H. Harke-Hosemann, A. J. Anderson, A. Jones, A. M. Kofman, A. Nadolski, A. N. Bender, A. Rahlin, A. Suzuki, A. T. Lee, B. A. Benson, B. Riedel, B. Thorne, C. Daley, C. Feng, C. L. Chang, C.-L. Kuo, C. L. Reichardt, C. Lu, C. M. Posada, C. Tucker, C. Umilta, D. Dutcher, D. Howe, D. L. Kubik, D. Michalik, D. Riebel, E. Anderes, E. Hivon, E. M. Leitch, E. Schiappucci, E. Shirokoff, E. V. Denison, F. Bianchini, F. R. Bouchet, F. W. Carter, G. Chen, G. C. Hilton, G. I. Noble, G. P. Holder, G. Smecher, G. Wang, H.-M. Cho, H. Nguyen, J. A. Sobrin, J. C. Hood, J. Ding, J. D. Vieira, J. E. Carlstrom, J. E. Ruhl, J.-F. Cliche, J. Fu, J. Montgomery, J. Pearson, J. S. Avva, J. Stephen, J. T. Sayre, J. W. Henning, K. Aylor, K. Benabed, K. Byrum, K. Dibert, K. D. Irwin, K. L. Thompson, K. Prabhu, K. R. Ferguson, K. T. Story, K. Vanderlinde, K. W. Yoon, L. Balkenhol, L. Bryant, L. E. Bleem, L. Knox, L. R. Vale, M. A. Dobbs, M. Archipley, M. Jonas, M. Korman, M. Millea, M. Rouble, M. R. Young, N. Goeckner-Wald, N. Gupta, N. Huang, N. L. Harrington, N. W. Halverson, N. Whitehorn, O. B. Jeong, P. A. R. Ade, P. Chaubal, P. Paschos, P. S. Barry, R. Basu Thakur, R. Gualtieri, R. Guyser, R. W. Gardner, S. Galli, S. Guns, S. Kuhlmann, S. Padin, S. S. Meyer, T. de Haan, T.-L. Chou, T. M. Crawford, T. Natoli, T. S. Khaire, T. W. Cecil, V. Novosad, V. Yefremenko, W. Everett, W. L. Holzapfel, W. L. K. Wu, W. Quan, Y. Omori, Z. Ahmed, Z. Pan","submitted_at":"2021-03-25T05:53:52Z","abstract_excerpt":"We present constraints on extensions to the $\\Lambda$CDM cosmological model from measurements of the $E$-mode polarization auto-power spectrum and the temperature-$E$-mode cross-power spectrum of the cosmic microwave background (CMB) made using 2018 SPT-3G data. The extensions considered vary the primordial helium abundance, the effective number of relativistic degrees of freedom, the sum of neutrino masses, the relativistic energy density and mass of a sterile neutrino, and the mean spatial curvature. We do not find clear evidence for any of these extensions, from either the SPT-3G 2018 datas"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.13618","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2103.13618/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}