{"paper":{"title":"Probing CPT Violation with CMB Polarization Measurements","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"Hong Li, Jun-Qing Xia, Xinmin Zhang","submitted_at":"2009-08-13T11:45:01Z","abstract_excerpt":"The electrodynamics modified by the Chern-Simons term $\\mathcal{L}_{cs}\\sim p_{\\mu}A_{\\nu}\\tilde F^{\\mu\\nu}$ with a non-vanishing $p_{\\mu}$ violates the {\\it Charge-Parity-Time Reversal} symmetry (CPT) and rotates the linear polarizations of the propagating {\\it Cosmic Microwave Background} (CMB) photons. In this paper we measure the rotation angle $\\Delta\\alpha$ by performing a global analysis on the current CMB polarization measurements from the {\\it seven-year Wilkinson Microwave Anisotropy Probe} (WMAP7), {\\it BOOMERanG 2003} (B03), BICEP and QUaD using a Markov Chain Monte Carlo method. N"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.1876","kind":"arxiv","version":3},"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"}