{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:Q6QCQE7CK6AZMIYDVOKRWEMV6Y","short_pith_number":"pith:Q6QCQE7C","canonical_record":{"source":{"id":"1908.07543","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-20T18:01:16Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"219ccc9e74e5f37da60ce05f4547e449601ea1ca41d44ccc81d6d62f35dd25f7","abstract_canon_sha256":"b08c8037a4292787c5b4897127346efb52195cf7ff4251153ab26e95b0dd6ba0"},"schema_version":"1.0"},"canonical_sha256":"87a02813e25781962303ab951b1195f61291ac4c4bdf1ec477e6aa42998f7e70","source":{"kind":"arxiv","id":"1908.07543","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.07543","created_at":"2026-07-05T00:28:12Z"},{"alias_kind":"arxiv_version","alias_value":"1908.07543v2","created_at":"2026-07-05T00:28:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.07543","created_at":"2026-07-05T00:28:12Z"},{"alias_kind":"pith_short_12","alias_value":"Q6QCQE7CK6AZ","created_at":"2026-07-05T00:28:12Z"},{"alias_kind":"pith_short_16","alias_value":"Q6QCQE7CK6AZMIYD","created_at":"2026-07-05T00:28:12Z"},{"alias_kind":"pith_short_8","alias_value":"Q6QCQE7C","created_at":"2026-07-05T00:28:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:Q6QCQE7CK6AZMIYDVOKRWEMV6Y","target":"record","payload":{"canonical_record":{"source":{"id":"1908.07543","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-20T18:01:16Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"219ccc9e74e5f37da60ce05f4547e449601ea1ca41d44ccc81d6d62f35dd25f7","abstract_canon_sha256":"b08c8037a4292787c5b4897127346efb52195cf7ff4251153ab26e95b0dd6ba0"},"schema_version":"1.0"},"canonical_sha256":"87a02813e25781962303ab951b1195f61291ac4c4bdf1ec477e6aa42998f7e70","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:28:12.113431Z","signature_b64":"iLFTbbTaYXzHW0leUsbdKJv6Bm+3V0cRiS3YMrNkAFXtEabnB0Z7mQ0/+vUcZ890yc+sbro1JkBtMJzI/6H3Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"87a02813e25781962303ab951b1195f61291ac4c4bdf1ec477e6aa42998f7e70","last_reissued_at":"2026-07-05T00:28:12.112942Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:28:12.112942Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.07543","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":"2026-07-05T00:28:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a4JM5UTQuv1oT9kPKRo5tBRdzgXFnv6R9AOB71UvVHn5Y+7IAtCNNmOmkH9FSGDtUK+Iq1Z45ZSEmPIaWTYBBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T20:34:20.961581Z"},"content_sha256":"6d2a42281b70b0cf6d1689d7f660656ac64e46e3824d36e6f9a0e3d41455aa44","schema_version":"1.0","event_id":"sha256:6d2a42281b70b0cf6d1689d7f660656ac64e46e3824d36e6f9a0e3d41455aa44"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:Q6QCQE7CK6AZMIYDVOKRWEMV6Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Some physical implications of regularization ambiguities in SU(2) gauge-invariant loop quantum cosmology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-th"],"primary_cat":"gr-qc","authors_text":"Klaus Liegener, Parampreet Singh","submitted_at":"2019-08-20T18:01:16Z","abstract_excerpt":"The way physics of loop quantum gravity is affected by the underlying quantization ambiguities is an open question. We address this issue in the context of loop quantum cosmology using gauge-covariant fluxes. Consequences are explored for two choices of regularization parameters: $\\mu_0$ and $\\bar \\mu$ in presence of a positive cosmological constant, and two choices of regularizations of the Hamiltonian constraint in loop quantum cosmology: the standard and the Thiemann regularization. We show that novel features of singularity resolution and bounce, occurring due to gauge-covariant fluxes, ex"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.07543","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/1908.07543/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":"2026-07-05T00:28:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j39E2TK91yUET6dASBZuM6tbV10LidSQyLvtnfQQdQyro7CyMGOW4Db4y5ndjuBEyFx93W/V/VF4ucAo4wQPBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T20:34:20.962165Z"},"content_sha256":"13200dd778dbb9e0847594c4585f1d44458082587f9c7c23630e55c2742d573c","schema_version":"1.0","event_id":"sha256:13200dd778dbb9e0847594c4585f1d44458082587f9c7c23630e55c2742d573c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q6QCQE7CK6AZMIYDVOKRWEMV6Y/bundle.json","state_url":"https://pith.science/pith/Q6QCQE7CK6AZMIYDVOKRWEMV6Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q6QCQE7CK6AZMIYDVOKRWEMV6Y/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":"2026-08-17T20:34:20Z","links":{"resolver":"https://pith.science/pith/Q6QCQE7CK6AZMIYDVOKRWEMV6Y","bundle":"https://pith.science/pith/Q6QCQE7CK6AZMIYDVOKRWEMV6Y/bundle.json","state":"https://pith.science/pith/Q6QCQE7CK6AZMIYDVOKRWEMV6Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q6QCQE7CK6AZMIYDVOKRWEMV6Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:Q6QCQE7CK6AZMIYDVOKRWEMV6Y","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":"b08c8037a4292787c5b4897127346efb52195cf7ff4251153ab26e95b0dd6ba0","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-20T18:01:16Z","title_canon_sha256":"219ccc9e74e5f37da60ce05f4547e449601ea1ca41d44ccc81d6d62f35dd25f7"},"schema_version":"1.0","source":{"id":"1908.07543","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.07543","created_at":"2026-07-05T00:28:12Z"},{"alias_kind":"arxiv_version","alias_value":"1908.07543v2","created_at":"2026-07-05T00:28:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.07543","created_at":"2026-07-05T00:28:12Z"},{"alias_kind":"pith_short_12","alias_value":"Q6QCQE7CK6AZ","created_at":"2026-07-05T00:28:12Z"},{"alias_kind":"pith_short_16","alias_value":"Q6QCQE7CK6AZMIYD","created_at":"2026-07-05T00:28:12Z"},{"alias_kind":"pith_short_8","alias_value":"Q6QCQE7C","created_at":"2026-07-05T00:28:12Z"}],"graph_snapshots":[{"event_id":"sha256:13200dd778dbb9e0847594c4585f1d44458082587f9c7c23630e55c2742d573c","target":"graph","created_at":"2026-07-05T00:28:12Z","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/1908.07543/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The way physics of loop quantum gravity is affected by the underlying quantization ambiguities is an open question. We address this issue in the context of loop quantum cosmology using gauge-covariant fluxes. Consequences are explored for two choices of regularization parameters: $\\mu_0$ and $\\bar \\mu$ in presence of a positive cosmological constant, and two choices of regularizations of the Hamiltonian constraint in loop quantum cosmology: the standard and the Thiemann regularization. We show that novel features of singularity resolution and bounce, occurring due to gauge-covariant fluxes, ex","authors_text":"Klaus Liegener, Parampreet Singh","cross_cats":["astro-ph.CO","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-20T18:01:16Z","title":"Some physical implications of regularization ambiguities in SU(2) gauge-invariant loop quantum cosmology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.07543","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":"sha256:6d2a42281b70b0cf6d1689d7f660656ac64e46e3824d36e6f9a0e3d41455aa44","target":"record","created_at":"2026-07-05T00:28:12Z","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":"b08c8037a4292787c5b4897127346efb52195cf7ff4251153ab26e95b0dd6ba0","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-20T18:01:16Z","title_canon_sha256":"219ccc9e74e5f37da60ce05f4547e449601ea1ca41d44ccc81d6d62f35dd25f7"},"schema_version":"1.0","source":{"id":"1908.07543","kind":"arxiv","version":2}},"canonical_sha256":"87a02813e25781962303ab951b1195f61291ac4c4bdf1ec477e6aa42998f7e70","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"87a02813e25781962303ab951b1195f61291ac4c4bdf1ec477e6aa42998f7e70","first_computed_at":"2026-07-05T00:28:12.112942Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:28:12.112942Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iLFTbbTaYXzHW0leUsbdKJv6Bm+3V0cRiS3YMrNkAFXtEabnB0Z7mQ0/+vUcZ890yc+sbro1JkBtMJzI/6H3Aw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:28:12.113431Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.07543","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6d2a42281b70b0cf6d1689d7f660656ac64e46e3824d36e6f9a0e3d41455aa44","sha256:13200dd778dbb9e0847594c4585f1d44458082587f9c7c23630e55c2742d573c"],"state_sha256":"b8ad7688a6fbe4072c1aa4634b7268fe8b49ed127469dc1ed143aea5391a59a2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LFJPB/V2q+w3+vZZ6JFWS/TWuH7DJv4xAhFDrLsvXDYeqoMcS7RSYpJ6QillHm4y36Uv635vspQfwyO01hipDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T20:34:20.968018Z","bundle_sha256":"0237ee5779643882667676f2beede40ef20d571216a241fade9ba6e68464c482"}}