{"paper":{"title":"Absence of isentropic expansion in various inflation models","arxiv_id":"hep-ph/0308211","primary_cat":"hep-ph","submitted_at":"2003-08-20T19:53:35+00:00","version_compiled":"v2"},"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. 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