{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:BDC3U5FWZKBYLYELQDPHCGEY33","short_pith_number":"pith:BDC3U5FW","canonical_record":{"source":{"id":"1906.05686","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-06-13T13:48:20Z","cross_cats_sorted":["hep-th","math-ph","math.MP"],"title_canon_sha256":"9e3790abc7b0699f1d0bd75485a349dac376c16aeb4405aeda2a7176aebdaf6c","abstract_canon_sha256":"cd6080425011a707d8c97127d3d3868b119586360fd6d4548b7631702a3591ed"},"schema_version":"1.0"},"canonical_sha256":"08c5ba74b6ca8385e08b80de711898ded7122059934df62ce59fb2f121a0139b","source":{"kind":"arxiv","id":"1906.05686","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.05686","created_at":"2026-07-05T01:06:30Z"},{"alias_kind":"arxiv_version","alias_value":"1906.05686v2","created_at":"2026-07-05T01:06:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.05686","created_at":"2026-07-05T01:06:30Z"},{"alias_kind":"pith_short_12","alias_value":"BDC3U5FWZKBY","created_at":"2026-07-05T01:06:30Z"},{"alias_kind":"pith_short_16","alias_value":"BDC3U5FWZKBYLYEL","created_at":"2026-07-05T01:06:30Z"},{"alias_kind":"pith_short_8","alias_value":"BDC3U5FW","created_at":"2026-07-05T01:06:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:BDC3U5FWZKBYLYELQDPHCGEY33","target":"record","payload":{"canonical_record":{"source":{"id":"1906.05686","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-06-13T13:48:20Z","cross_cats_sorted":["hep-th","math-ph","math.MP"],"title_canon_sha256":"9e3790abc7b0699f1d0bd75485a349dac376c16aeb4405aeda2a7176aebdaf6c","abstract_canon_sha256":"cd6080425011a707d8c97127d3d3868b119586360fd6d4548b7631702a3591ed"},"schema_version":"1.0"},"canonical_sha256":"08c5ba74b6ca8385e08b80de711898ded7122059934df62ce59fb2f121a0139b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:06:30.769334Z","signature_b64":"FSQ3SqbPkDdBYpQlc820OjM3lY/3p/nIZQbhxcuugu0UVrsdwQbNVzGksqFg2OgUO/3c78w4EjfEe2NmZRUhBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"08c5ba74b6ca8385e08b80de711898ded7122059934df62ce59fb2f121a0139b","last_reissued_at":"2026-07-05T01:06:30.768828Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:06:30.768828Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1906.05686","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":"2026-07-05T01:06:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jp0gHzSZRZfaIMJ6T0tvcJjK2XCKy5iCiaaEq+6BeudCx3udKNsDXq4fXGzaKNqkPkoqMkaisSMnmkAb/E1aCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T18:03:55.972176Z"},"content_sha256":"3c6db6b449979004949f364b4b264b49a863dc09887a28029605d634dba67721","schema_version":"1.0","event_id":"sha256:3c6db6b449979004949f364b4b264b49a863dc09887a28029605d634dba67721"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:BDC3U5FWZKBYLYELQDPHCGEY33","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Towards Gaussian states for loop quantum gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th","math-ph","math.MP"],"primary_cat":"gr-qc","authors_text":"Hanno Sahlmann, Robert Seeger","submitted_at":"2019-06-13T13:48:20Z","abstract_excerpt":"An important challenge in loop quantum gravity is to find semiclassical states - states that are as close to classical as quantum theory allows. This is difficult because the states in the Hilbert space used in LQG are excitations over a vacuum in which geometry is highly degenerate. Additionally, fluctuations are distributed very unevenly between configuration and momentum variables. Coherent states that have been proposed to balance the uncertainties more evenly can, up to now, only do this for finitely many degrees of freedom. Our work is motivated by the desire to obtain Gaussian states th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.05686","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1906.05686/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T01:06:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yS5ULiMwERawemdpTku8jhCzo8YiOxnlze1skw8g3dWLRGsyvJopm3cGnZk/gvfvBbn9sGjJ2OWROjVTKyMbAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T18:03:55.972671Z"},"content_sha256":"5994a74892fa6a27e9dbf1221380eb8b8b2ddbc6c131f38bf26534ffd8098d79","schema_version":"1.0","event_id":"sha256:5994a74892fa6a27e9dbf1221380eb8b8b2ddbc6c131f38bf26534ffd8098d79"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BDC3U5FWZKBYLYELQDPHCGEY33/bundle.json","state_url":"https://pith.science/pith/BDC3U5FWZKBYLYELQDPHCGEY33/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BDC3U5FWZKBYLYELQDPHCGEY33/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":"2026-08-12T18:03:55Z","links":{"resolver":"https://pith.science/pith/BDC3U5FWZKBYLYELQDPHCGEY33","bundle":"https://pith.science/pith/BDC3U5FWZKBYLYELQDPHCGEY33/bundle.json","state":"https://pith.science/pith/BDC3U5FWZKBYLYELQDPHCGEY33/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BDC3U5FWZKBYLYELQDPHCGEY33/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:BDC3U5FWZKBYLYELQDPHCGEY33","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":"cd6080425011a707d8c97127d3d3868b119586360fd6d4548b7631702a3591ed","cross_cats_sorted":["hep-th","math-ph","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-06-13T13:48:20Z","title_canon_sha256":"9e3790abc7b0699f1d0bd75485a349dac376c16aeb4405aeda2a7176aebdaf6c"},"schema_version":"1.0","source":{"id":"1906.05686","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.05686","created_at":"2026-07-05T01:06:30Z"},{"alias_kind":"arxiv_version","alias_value":"1906.05686v2","created_at":"2026-07-05T01:06:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.05686","created_at":"2026-07-05T01:06:30Z"},{"alias_kind":"pith_short_12","alias_value":"BDC3U5FWZKBY","created_at":"2026-07-05T01:06:30Z"},{"alias_kind":"pith_short_16","alias_value":"BDC3U5FWZKBYLYEL","created_at":"2026-07-05T01:06:30Z"},{"alias_kind":"pith_short_8","alias_value":"BDC3U5FW","created_at":"2026-07-05T01:06:30Z"}],"graph_snapshots":[{"event_id":"sha256:5994a74892fa6a27e9dbf1221380eb8b8b2ddbc6c131f38bf26534ffd8098d79","target":"graph","created_at":"2026-07-05T01:06:30Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1906.05686/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"An important challenge in loop quantum gravity is to find semiclassical states - states that are as close to classical as quantum theory allows. This is difficult because the states in the Hilbert space used in LQG are excitations over a vacuum in which geometry is highly degenerate. Additionally, fluctuations are distributed very unevenly between configuration and momentum variables. Coherent states that have been proposed to balance the uncertainties more evenly can, up to now, only do this for finitely many degrees of freedom. Our work is motivated by the desire to obtain Gaussian states th","authors_text":"Hanno Sahlmann, Robert Seeger","cross_cats":["hep-th","math-ph","math.MP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-06-13T13:48:20Z","title":"Towards Gaussian states for loop quantum gravity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.05686","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":"sha256:3c6db6b449979004949f364b4b264b49a863dc09887a28029605d634dba67721","target":"record","created_at":"2026-07-05T01:06:30Z","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":"cd6080425011a707d8c97127d3d3868b119586360fd6d4548b7631702a3591ed","cross_cats_sorted":["hep-th","math-ph","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-06-13T13:48:20Z","title_canon_sha256":"9e3790abc7b0699f1d0bd75485a349dac376c16aeb4405aeda2a7176aebdaf6c"},"schema_version":"1.0","source":{"id":"1906.05686","kind":"arxiv","version":2}},"canonical_sha256":"08c5ba74b6ca8385e08b80de711898ded7122059934df62ce59fb2f121a0139b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"08c5ba74b6ca8385e08b80de711898ded7122059934df62ce59fb2f121a0139b","first_computed_at":"2026-07-05T01:06:30.768828Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:06:30.768828Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FSQ3SqbPkDdBYpQlc820OjM3lY/3p/nIZQbhxcuugu0UVrsdwQbNVzGksqFg2OgUO/3c78w4EjfEe2NmZRUhBw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:06:30.769334Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.05686","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3c6db6b449979004949f364b4b264b49a863dc09887a28029605d634dba67721","sha256:5994a74892fa6a27e9dbf1221380eb8b8b2ddbc6c131f38bf26534ffd8098d79"],"state_sha256":"821f5d42fe9b2f6048c3cd732d068b281fe2a78d75e22cb8090a66cdb4d18561"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"50juKyc4lFdYDugOBi3ig06SkZfumPYkCsukrFtCTIS6Wh+e3MQclCwT/BwCOVrIcRPYQ20xUaihhkeQUASmCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T18:03:55.976816Z","bundle_sha256":"74d961f6610d3bb184611715d59c0cc27ea1921f39890087ecc5a038c886237f"}}