{"work":{"id":"f653fe75-f164-43d6-9fd6-e4d313fb93d0","openalex_id":null,"doi":null,"arxiv_id":"hep-th/9303048","raw_key":null,"title":"Entropy and Area","authors":null,"authors_text":"M","year":1993,"venue":"hep-th","abstract":"The ground state density matrix for a massless free field is traced over the degrees of freedom residing inside an imaginary sphere; the resulting entropy is shown to be proportional to the area (and not the volume) of the sphere. Possible connections with the physics of black holes are discussed.","external_url":"https://arxiv.org/abs/hep-th/9303048","cited_by_count":null,"metadata_source":"pith","metadata_fetched_at":"2026-05-24T19:44:53.671438+00:00","pith_arxiv_id":"hep-th/9303048","created_at":"2026-05-11T04:31:00.329719+00:00","updated_at":"2026-05-24T19:44:53.671438+00:00","title_quality_ok":false,"display_title":"Srednicki,Entropy and area,Phys","render_title":"Srednicki,Entropy and area,Phys"},"hub":{"state":{"work_id":"f653fe75-f164-43d6-9fd6-e4d313fb93d0","tier":"hub","tier_reason":"10+ Pith inbound or 1,000+ external citations","pith_inbound_count":11,"external_cited_by_count":null,"distinct_field_count":4,"first_pith_cited_at":"2019-07-18T16:05:49+00:00","last_pith_cited_at":"2026-05-20T11:34:15+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":"2026-05-31T02:31:55.920844+00:00","tier_text":"hub"},"tier":"hub","role_counts":[{"context_role":"background","n":4}],"polarity_counts":[{"context_polarity":"background","n":4}],"runs":{},"summary":{},"graph":{},"authors":[]}}