{"work":{"id":"44dd6b5d-c4c6-4aee-8d7d-7f1fb0e3aaf3","openalex_id":null,"doi":null,"arxiv_id":"astro-ph/9708069","raw_key":null,"title":"Cosmological Imprint of an Energy Component with General Equation of State","authors":null,"authors_text":"R","year":1997,"venue":"astro-ph","abstract":"We examine the possibility that a significant component of the energy density of the universe has an equation-of-state different from that of matter, radiation or cosmological constant ($\\Lambda$). An example is a cosmic scalar field evolving in a potential, but our treatment is more general. Including this component alters cosmic evolution in a way that fits current observations well. Unlike $\\Lambda$, it evolves dynamically and develops fluctuations, leaving a distinctive imprint on the microwave background anisotropy and mass power spectrum.","external_url":"https://arxiv.org/abs/astro-ph/9708069","cited_by_count":null,"metadata_source":"pith","metadata_fetched_at":"2026-05-24T01:18:42.337709+00:00","pith_arxiv_id":"astro-ph/9708069","created_at":"2026-05-10T22:05:49.753660+00:00","updated_at":"2026-06-05T21:23:00.469572+00:00","title_quality_ok":true,"display_title":"Cosmological Imprint of an Energy Component with General Equation of State","render_title":"Cosmological Imprint of an Energy Component with General Equation of State"},"hub":{"state":{"work_id":"44dd6b5d-c4c6-4aee-8d7d-7f1fb0e3aaf3","tier":"hub","tier_reason":"10+ Pith inbound or 1,000+ external citations","pith_inbound_count":10,"external_cited_by_count":null,"distinct_field_count":3,"first_pith_cited_at":"2024-05-07T01:42:30+00:00","last_pith_cited_at":"2026-05-12T18:13:01+00:00","author_build_status":"not_needed","summary_status":"needed","contexts_status":"needed","graph_status":"needed","ask_index_status":"not_needed","reader_status":"not_needed","recognition_status":"not_needed","updated_at":"2026-06-12T07:59:32.740357+00:00","tier_text":"hub"},"tier":"hub","role_counts":[{"context_role":"background","n":5}],"polarity_counts":[{"context_polarity":"background","n":5}],"runs":{},"summary":{},"graph":{},"authors":[]}}