{"paper":{"title":"Suppressing the impact of a high tensor-to-scalar ratio on the temperature anisotropies","arxiv_id":"1403.4596","primary_cat":"astro-ph.CO","submitted_at":"2014-03-18T19:57:18+00:00","version_compiled":"v4"},"notice":"Every quoted sentence is the authors' text from the arXiv listing abstract. Labels and probabilities are the outputs of classifier-1.13-20260917 on the question bank abstract-p1-20260923, exactly as returned. No sentence in this record was written by a language model.","schema":"pith.compiled-record/v0","status":"compiled","abstract":{"source":"arXiv listing abstract v4","sentences":[{"i":0,"p":1.0,"id":"s0","own":false,"role":"background","text":"The BICEP2 collaboration has reported a strong B mode signal in the CMB polarization, which is well fit by a tensor-to-scalar ratio of r ~ 0.2.","hedge":{"p":0.99,"label":"asserted"},"own_p":0.04,"main_claim_p":0.03,"quantitative":true,"quantitative_p":0.97,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.0,"background":1.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.0}},{"i":1,"p":0.94,"id":"s1","own":false,"role":"background","text":"This is greater than the upper limit r < 0.11 obtained from the temperature anisotropies under the assumption of a constant scalar spectral index n_s.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.08,"main_claim_p":0.03,"quantitative":true,"quantitative_p":0.99,"role_probabilities":{"gap":0.05,"method":0.0,"result":0.01,"background":0.94,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.0}},{"i":2,"p":0.85,"id":"s2","own":false,"role":"background","text":"This discrepancy can be reduced once the statistical error and the contamination from polarized dust are accounted for.","hedge":{"p":0.75,"label":"asserted"},"own_p":0.12,"main_claim_p":0.04,"quantitative":false,"quantitative_p":0.08,"role_probabilities":{"gap":0.03,"method":0.0,"result":0.03,"background":0.85,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.09}},{"i":3,"p":0.74,"id":"s3","own":false,"role":"background","text":"If however a large value for r will be confirmed, it will need to be reconciled with the temperature anisotropies data.","hedge":{"p":0.68,"label":"hedged_possibility"},"own_p":0.06,"main_claim_p":0.04,"quantitative":false,"quantitative_p":0.06,"role_probabilities":{"gap":0.24,"method":0.0,"result":0.0,"background":0.74,"limitation":0.0,"future_work":0.01,"contribution":0.0,"interpretation":0.01}},{"i":4,"p":0.99,"id":"s4","own":false,"role":"background","text":"The most advocated explanation involves a variation of n_s with scales (denoted as running) that has a magnitude significantly greater than the generic slow roll predictions.","hedge":{"p":0.89,"label":"asserted"},"own_p":0.05,"main_claim_p":0.04,"quantitative":true,"quantitative_p":0.68,"role_probabilities":{"gap":0.01,"method":0.0,"result":0.0,"background":0.99,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.0}},{"i":5,"p":1.0,"id":"s5","own":false,"role":"contribution","text":"We instead study the possibility that the large scale temperature anisotropies are not enhanced because of a suppression of the scalar power at large scales.","hedge":{"p":0.91,"label":"hedged_possibility"},"own_p":0.44,"main_claim_p":0.24,"quantitative":false,"quantitative_p":0.05,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":1.0,"interpretation":0.0}},{"i":6,"p":0.81,"id":"s6","own":true,"role":"result","text":"Such a situation can be achieved for instance by a sudden change of the speed of the inflaton (by about 14 %), and we show that it fits the temperature anisotropies and polarization data considerably better than a constant running (its chi^2 improves by ~ 7.5 over that of the constant running, at the cost of one more parameter).","hedge":{"p":0.99,"label":"asserted"},"own_p":0.95,"main_claim_p":0.68,"quantitative":true,"quantitative_p":0.99,"role_probabilities":{"gap":0.0,"method":0.01,"result":0.81,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.18,"interpretation":0.0}},{"i":7,"p":0.97,"id":"s7","own":true,"role":"contribution","text":"We also consider the possibility that the large scale temperature fluctuations are suppressed by an anti-correlation between tensor and scalar modes.","hedge":{"p":0.91,"label":"hedged_possibility"},"own_p":0.53,"main_claim_p":0.05,"quantitative":false,"quantitative_p":0.04,"role_probabilities":{"gap":0.0,"method":0.03,"result":0.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.97,"interpretation":0.0}},{"i":8,"p":0.9,"id":"s8","own":true,"role":"result","text":"Unfortunately, while such effect does affect the temperature fluctuations at large scales, it does not affect the temperature power spectrum and cannot, therefore, 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