{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1995:KHQJXXFJ2DVRAVGKSNPIBMENLO","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"5b4e1a6315e088278d36b67f66806692babf0a650303b60320eab21fdcf2ed04","cross_cats_sorted":["astro-ph","gr-qc","hep-th"],"license":"","primary_cat":"hep-ph","submitted_at":"1995-01-13T14:35:06Z","title_canon_sha256":"a5acf4b88a26f23fbec6f2db3d70f95ed145a2e72e62f8e352ef18d3beec4198"},"schema_version":"1.0","source":{"id":"hep-ph/9501293","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9501293","created_at":"2026-05-18T01:06:34Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9501293v1","created_at":"2026-05-18T01:06:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9501293","created_at":"2026-05-18T01:06:34Z"},{"alias_kind":"pith_short_12","alias_value":"KHQJXXFJ2DVR","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"KHQJXXFJ2DVRAVGK","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"KHQJXXFJ","created_at":"2026-05-18T12:25:47Z"}],"graph_snapshots":[{"event_id":"sha256:c0a8d34e5cf89b6bb884df06d499a4f56f5885cf3ae446832ba8e735388dc289","target":"graph","created_at":"2026-05-18T01:06:34Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We propose a new cosmological model with a time-dependent cosmological constant ($\\Lambda\\propto 1/t^2$), which starting at the Planck time as $\\Lambda_{Pl}\\sim M^2_{Pl}$, evolves to the present-day allowed value of $\\Lambda_0\\sim10^{-120}M^2_{Pl}$. This scenario is supported by non-critical string theory considerations. We compute the age of the Universe and the time-dependence of the scale factor in this model, and find general agreement with recent determinations of the Hubble parameter for substantial values of $\\Omega_{\\rm \\Lambda}$. This effectively low-density open Universe model differ","authors_text":"D. Nanopoulos, J. Lopez","cross_cats":["astro-ph","gr-qc","hep-th"],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"1995-01-13T14:35:06Z","title":"A new cosmological constant model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9501293","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:2309c6585ca662e69414af20abca577098d625e790b1d767df2bdc6e12862312","target":"record","created_at":"2026-05-18T01:06:34Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"5b4e1a6315e088278d36b67f66806692babf0a650303b60320eab21fdcf2ed04","cross_cats_sorted":["astro-ph","gr-qc","hep-th"],"license":"","primary_cat":"hep-ph","submitted_at":"1995-01-13T14:35:06Z","title_canon_sha256":"a5acf4b88a26f23fbec6f2db3d70f95ed145a2e72e62f8e352ef18d3beec4198"},"schema_version":"1.0","source":{"id":"hep-ph/9501293","kind":"arxiv","version":1}},"canonical_sha256":"51e09bdca9d0eb1054ca935e80b08d5b89ca32580a43db7995e71e340334f23b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"51e09bdca9d0eb1054ca935e80b08d5b89ca32580a43db7995e71e340334f23b","first_computed_at":"2026-05-18T01:06:34.864962Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:06:34.864962Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3X3SbZH7tPbS+ls1ztou54EowP2hOlB6i/jpR1J6BVuGl2HfNgdK7nq49J+G5j1TZeeUL9oKfdpdKR8Lp6QYAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:06:34.865673Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/9501293","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2309c6585ca662e69414af20abca577098d625e790b1d767df2bdc6e12862312","sha256:c0a8d34e5cf89b6bb884df06d499a4f56f5885cf3ae446832ba8e735388dc289"],"state_sha256":"9aaba289ab52ea2c6176de890972d40b69edb0b4803244ddd03d5848cfb5422b"}