{"paper":{"title":"Phase space analysis of bulk viscous matter dominated universe","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Athira Sasidharan, Titus K Mathew","submitted_at":"2015-11-17T06:56:59Z","abstract_excerpt":"We consider a Friedmann model of the universe with bulk viscous matter and radiation as the cosmic components. We study the asymptotic properties in the equivalent phase space by considering the three cases for the bulk viscous coefficient as (i) $\\zeta = \\zeta_{0}$, a constant (ii) $\\zeta = \\zeta_{0} + \\zeta_{1}\\frac{\\dot{a}}{a}$, depending on velocity of the expansion of the universe and (iii) $\\zeta = \\zeta_{0} + \\zeta_{1}\\frac{\\dot{a}}{a} + \\zeta_{2}\\frac{\\ddot{a}}{\\dot{a}}$, depending both on velocity and acceleration of the expansion of the universe. It is found that all the three cases "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.05287","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"}