{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:RPBOIHC5KELBH424Q5OQZWILBK","short_pith_number":"pith:RPBOIHC5","canonical_record":{"source":{"id":"1708.09670","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-08-31T11:21:39Z","cross_cats_sorted":[],"title_canon_sha256":"ea575c818018d1c09481c4a99ea9baa57864908f40fb9e570964ec6d98538338","abstract_canon_sha256":"09588280904cdc289039782fa727574ea086505e8b659974aaa0e9e2f498d337"},"schema_version":"1.0"},"canonical_sha256":"8bc2e41c5d511613f35c875d0cd90b0aa036c642d39f40798ec50f37f5632a37","source":{"kind":"arxiv","id":"1708.09670","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.09670","created_at":"2026-05-18T00:35:03Z"},{"alias_kind":"arxiv_version","alias_value":"1708.09670v2","created_at":"2026-05-18T00:35:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.09670","created_at":"2026-05-18T00:35:03Z"},{"alias_kind":"pith_short_12","alias_value":"RPBOIHC5KELB","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"RPBOIHC5KELBH424","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"RPBOIHC5","created_at":"2026-05-18T12:31:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:RPBOIHC5KELBH424Q5OQZWILBK","target":"record","payload":{"canonical_record":{"source":{"id":"1708.09670","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-08-31T11:21:39Z","cross_cats_sorted":[],"title_canon_sha256":"ea575c818018d1c09481c4a99ea9baa57864908f40fb9e570964ec6d98538338","abstract_canon_sha256":"09588280904cdc289039782fa727574ea086505e8b659974aaa0e9e2f498d337"},"schema_version":"1.0"},"canonical_sha256":"8bc2e41c5d511613f35c875d0cd90b0aa036c642d39f40798ec50f37f5632a37","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:35:03.520005Z","signature_b64":"iIHUvr69QiI25PBcnBWgGDk5LKDGuJrQ1tNwTBm8fGLqOpL5bY6vNvskUft0Hr5UKEQZxCgHGEI18hcu9ZXWBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8bc2e41c5d511613f35c875d0cd90b0aa036c642d39f40798ec50f37f5632a37","last_reissued_at":"2026-05-18T00:35:03.519264Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:35:03.519264Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.09670","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:35:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SPTK0LdW6i9IZWQM58OoV1fqA0VCXbT8j6fDMRdT/tZKdh1wTM4pTClXdYkIlXpC14AomI7RKvIYmPDoagWCCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T22:32:13.245928Z"},"content_sha256":"28f820ee05c5e328ffa640db6ba4747d86b81e8a26ebe90c252a08ff37f26a70","schema_version":"1.0","event_id":"sha256:28f820ee05c5e328ffa640db6ba4747d86b81e8a26ebe90c252a08ff37f26a70"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:RPBOIHC5KELBH424Q5OQZWILBK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Coherent states quantization and affine symmetry in quantum models of gravitational singularities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Ewa Czuchry, Herv\\'e Bergeron, Przemys{\\l}aw Ma{\\l}kiewicz","submitted_at":"2017-08-31T11:21:39Z","abstract_excerpt":"We employ the framework of affine covariant quantization and associated semiclassical portrait to address two main issues in the domain of quantum gravitational systems: (i) the fate of singularities and (ii) the lack of external time. Our discussion is based on finite-dimensional, symmetry-reduced cosmological models. We show that the affine quantization of the cosmological dynamics removes the classical singularity and univocally establishes a unitary evolution. The semiclassical portrait based on the affine coherent states exhibits a big bounce replacing the big-bang singularity. As a parti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.09670","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:35:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xI+NIqmEZUcVmsoqFZEYfbKfvgq2klUeZTWkhRZQ90OQr/cDpJUG1cf0QAzFKD4DAR9NoE+WquoD8lJDaXvQCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T22:32:13.246620Z"},"content_sha256":"fbbbbd65022f6b97db1a93e364b24619367cce4651666f83c680acacb5ee82f2","schema_version":"1.0","event_id":"sha256:fbbbbd65022f6b97db1a93e364b24619367cce4651666f83c680acacb5ee82f2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RPBOIHC5KELBH424Q5OQZWILBK/bundle.json","state_url":"https://pith.science/pith/RPBOIHC5KELBH424Q5OQZWILBK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RPBOIHC5KELBH424Q5OQZWILBK/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-28T22:32:13Z","links":{"resolver":"https://pith.science/pith/RPBOIHC5KELBH424Q5OQZWILBK","bundle":"https://pith.science/pith/RPBOIHC5KELBH424Q5OQZWILBK/bundle.json","state":"https://pith.science/pith/RPBOIHC5KELBH424Q5OQZWILBK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RPBOIHC5KELBH424Q5OQZWILBK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:RPBOIHC5KELBH424Q5OQZWILBK","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":"09588280904cdc289039782fa727574ea086505e8b659974aaa0e9e2f498d337","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-08-31T11:21:39Z","title_canon_sha256":"ea575c818018d1c09481c4a99ea9baa57864908f40fb9e570964ec6d98538338"},"schema_version":"1.0","source":{"id":"1708.09670","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.09670","created_at":"2026-05-18T00:35:03Z"},{"alias_kind":"arxiv_version","alias_value":"1708.09670v2","created_at":"2026-05-18T00:35:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.09670","created_at":"2026-05-18T00:35:03Z"},{"alias_kind":"pith_short_12","alias_value":"RPBOIHC5KELB","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"RPBOIHC5KELBH424","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"RPBOIHC5","created_at":"2026-05-18T12:31:39Z"}],"graph_snapshots":[{"event_id":"sha256:fbbbbd65022f6b97db1a93e364b24619367cce4651666f83c680acacb5ee82f2","target":"graph","created_at":"2026-05-18T00:35:03Z","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 employ the framework of affine covariant quantization and associated semiclassical portrait to address two main issues in the domain of quantum gravitational systems: (i) the fate of singularities and (ii) the lack of external time. Our discussion is based on finite-dimensional, symmetry-reduced cosmological models. We show that the affine quantization of the cosmological dynamics removes the classical singularity and univocally establishes a unitary evolution. The semiclassical portrait based on the affine coherent states exhibits a big bounce replacing the big-bang singularity. As a parti","authors_text":"Ewa Czuchry, Herv\\'e Bergeron, Przemys{\\l}aw Ma{\\l}kiewicz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-08-31T11:21:39Z","title":"Coherent states quantization and affine symmetry in quantum models of gravitational singularities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.09670","kind":"arxiv","version":2},"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":"sha256:28f820ee05c5e328ffa640db6ba4747d86b81e8a26ebe90c252a08ff37f26a70","target":"record","created_at":"2026-05-18T00:35:03Z","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":"09588280904cdc289039782fa727574ea086505e8b659974aaa0e9e2f498d337","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-08-31T11:21:39Z","title_canon_sha256":"ea575c818018d1c09481c4a99ea9baa57864908f40fb9e570964ec6d98538338"},"schema_version":"1.0","source":{"id":"1708.09670","kind":"arxiv","version":2}},"canonical_sha256":"8bc2e41c5d511613f35c875d0cd90b0aa036c642d39f40798ec50f37f5632a37","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8bc2e41c5d511613f35c875d0cd90b0aa036c642d39f40798ec50f37f5632a37","first_computed_at":"2026-05-18T00:35:03.519264Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:35:03.519264Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iIHUvr69QiI25PBcnBWgGDk5LKDGuJrQ1tNwTBm8fGLqOpL5bY6vNvskUft0Hr5UKEQZxCgHGEI18hcu9ZXWBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:35:03.520005Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.09670","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:28f820ee05c5e328ffa640db6ba4747d86b81e8a26ebe90c252a08ff37f26a70","sha256:fbbbbd65022f6b97db1a93e364b24619367cce4651666f83c680acacb5ee82f2"],"state_sha256":"c171e3d522e5467d9e6d0f9cf7544e93788e34fc2e8ed12691ebbbf213932920"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h4SraieUeNI9xghBLz7W4qUD3RqNDfB/h6mhpQt8p3dTGFPy7TEDfu8Cz3UElAhZdQjysNbvNRsQ19LwXoi/Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T22:32:13.249580Z","bundle_sha256":"c800ab25ef854783b8224fe75e2c854e4be770fb9e125c20ee7e0536ab978c22"}}