{"paper":{"title":"Measuring chiral gravitational waves in Chern-Simons gravity with CMB bispectra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-ph","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"Giorgio Orlando, Maresuke Shiraishi, Nicola Bartolo","submitted_at":"2018-09-28T17:58:55Z","abstract_excerpt":"Chern-Simons gravity coupled to the scalar sector through a generic coupling function $f(\\phi)$ can be tested at the very high energies of the inflationary period. In 1706.04627, we computed the theoretical parity breaking signatures of the $\\langle \\gamma \\gamma \\zeta \\rangle$ primordial bispectrum which mixes two gravitons and one scalar curvature perturbation. We defined a parameter $\\Pi$ which measures the level of parity breaking of the corresponding bispectrum. In this work we forecast the expected $1 \\sigma$ error on $\\Pi$ using the cosmic microwave background (CMB) angular bispectra. W"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.11170","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"}