{"paper":{"title":"Power law Starobinsky model of inflation from no-scale SUGRA","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","gr-qc"],"primary_cat":"hep-ph","authors_text":"Girish Kumar Chakravarty, Subhendra Mohanty","submitted_at":"2014-05-06T15:35:48Z","abstract_excerpt":"We consider a power law $\\frac{1}{M^2}R^{\\beta}$ correction to Einstein gravity as a model of inflation. The interesting feature of this form of generalization is that small deviations from the Starobinsky limit $\\beta=2$ can change the value of tensor to scalar ratio from $r \\sim \\mathcal{O}(10^{-3})$ to $r\\sim \\mathcal{O}(0.1)$. We find that in order to get large tensor perturbation $r\\approx 0.1$ as indicated by BKP measurements, we require the value of $\\beta \\approx 1.83$ thereby breaking global Weyl symmetry. We show that the general $R^\\beta$ model can be obtained from a SUGRA construct"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.1321","kind":"arxiv","version":5},"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"}