{"paper":{"title":"Tensor to Scalar Ratio in Non-Minimal $\\phi^4$ Inflation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-th"],"primary_cat":"hep-ph","authors_text":"Mansoor Ur Rehman, Nobuchika Okada, Qaisar Shafi","submitted_at":"2010-05-27T20:00:02Z","abstract_excerpt":"We reconsider non-minimal \\lambda \\phi^4 chaotic inflation which includes the gravitational coupling term \\xi \\mathcal{R} \\phi^2, where \\phi denotes a gauge singlet inflaton field and \\mathcal{R} is the Ricci scalar. For \\xi >> 1 we require, following recent discussions, that the energy scale \\lambda^{1/4} m_P / \\sqrt{\\xi} for inflation should not exceed the effective UV cut-off scale m_P / \\xi, where m_P denotes the reduced Planck scale. The predictions for the tensor to scalar ratio r and the scalar spectral index n_s are found to lie within the WMAP 1-\\sigma bounds for 10^{-12} < \\lambda < "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.5161","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":""},"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"}