{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:J3VBD7M34VHPT7XJDUIUEH4G7I","short_pith_number":"pith:J3VBD7M3","canonical_record":{"source":{"id":"1704.08750","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-04-27T21:21:48Z","cross_cats_sorted":["astro-ph.HE","hep-ph","hep-th"],"title_canon_sha256":"d722c55af3d14253fd72779d06c97fff512969f4cb73473e25350585d50331fa","abstract_canon_sha256":"8176a5bb73269a35907d9a5e00a476ef3320c304d30e9fd92a9e0347d3faa846"},"schema_version":"1.0"},"canonical_sha256":"4eea11fd9be54ef9fee91d11421f86fa269588883296799651b5c1a06283c456","source":{"kind":"arxiv","id":"1704.08750","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.08750","created_at":"2026-05-18T00:29:13Z"},{"alias_kind":"arxiv_version","alias_value":"1704.08750v4","created_at":"2026-05-18T00:29:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.08750","created_at":"2026-05-18T00:29:13Z"},{"alias_kind":"pith_short_12","alias_value":"J3VBD7M34VHP","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"J3VBD7M34VHPT7XJ","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"J3VBD7M3","created_at":"2026-05-18T12:31:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:J3VBD7M34VHPT7XJDUIUEH4G7I","target":"record","payload":{"canonical_record":{"source":{"id":"1704.08750","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-04-27T21:21:48Z","cross_cats_sorted":["astro-ph.HE","hep-ph","hep-th"],"title_canon_sha256":"d722c55af3d14253fd72779d06c97fff512969f4cb73473e25350585d50331fa","abstract_canon_sha256":"8176a5bb73269a35907d9a5e00a476ef3320c304d30e9fd92a9e0347d3faa846"},"schema_version":"1.0"},"canonical_sha256":"4eea11fd9be54ef9fee91d11421f86fa269588883296799651b5c1a06283c456","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:29:13.362737Z","signature_b64":"h4hjEriTB8Afq1BZFY3tGfMXBGkNAK1S5HQVkux/J2kWyODv/6nJ2QikknrLE4ETutVqdLfKnQibxLrQPA8vDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4eea11fd9be54ef9fee91d11421f86fa269588883296799651b5c1a06283c456","last_reissued_at":"2026-05-18T00:29:13.362105Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:29:13.362105Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1704.08750","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:29:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s70YTAqqrkGTsgUx2T04Jeoo34Pagm8rzMKgOO8Cuk82ZkjIaHWWx0j4Mj3lSTVKJ7qLXctHO4T5GY21ho5CAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T13:05:05.989428Z"},"content_sha256":"a476973bd2d3d468460ac63622fff453b17aef1831a06b51822f58e3577ab1eb","schema_version":"1.0","event_id":"sha256:a476973bd2d3d468460ac63622fff453b17aef1831a06b51822f58e3577ab1eb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:J3VBD7M34VHPT7XJDUIUEH4G7I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bounds on the Polymer Scale from Gamma Ray Bursts","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","hep-ph","hep-th"],"primary_cat":"gr-qc","authors_text":"Angel Garcia-Chung, Saeed Rastgoo, Yuri Bonder","submitted_at":"2017-04-27T21:21:48Z","abstract_excerpt":"The polymer representations, which are partially motivated by loop quantum gravity, have been suggested as alternative schemes to quantize the matter fields. Here we apply a version of the polymer representations to the free electromagnetic field, in a reduced phase space setting, and derive the corresponding effective (i.e., semiclassical) Hamiltonian. We study the propagation of an electromagnetic pulse and we confront our theoretical results with gamma ray burst observations. This comparison reveals that the dimensionless polymer scale must be smaller than $4\\times 10^{-35}$, casting doubts"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.08750","kind":"arxiv","version":4},"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":"2026-05-18T00:29:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xiOKQyw1YS5n6G26vXNJipWKTlqsqDXcMk/KfjnxWHy958+13HIzuwRlG8wd2osVZjXgGe20u0YIG6JHG1UxDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T13:05:05.989800Z"},"content_sha256":"4bf5315c82f798ffea29f5808a5e1438d543ce7be428734da2a28b30167c2897","schema_version":"1.0","event_id":"sha256:4bf5315c82f798ffea29f5808a5e1438d543ce7be428734da2a28b30167c2897"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/J3VBD7M34VHPT7XJDUIUEH4G7I/bundle.json","state_url":"https://pith.science/pith/J3VBD7M34VHPT7XJDUIUEH4G7I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/J3VBD7M34VHPT7XJDUIUEH4G7I/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":"2026-06-03T13:05:05Z","links":{"resolver":"https://pith.science/pith/J3VBD7M34VHPT7XJDUIUEH4G7I","bundle":"https://pith.science/pith/J3VBD7M34VHPT7XJDUIUEH4G7I/bundle.json","state":"https://pith.science/pith/J3VBD7M34VHPT7XJDUIUEH4G7I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/J3VBD7M34VHPT7XJDUIUEH4G7I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:J3VBD7M34VHPT7XJDUIUEH4G7I","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":"8176a5bb73269a35907d9a5e00a476ef3320c304d30e9fd92a9e0347d3faa846","cross_cats_sorted":["astro-ph.HE","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-04-27T21:21:48Z","title_canon_sha256":"d722c55af3d14253fd72779d06c97fff512969f4cb73473e25350585d50331fa"},"schema_version":"1.0","source":{"id":"1704.08750","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.08750","created_at":"2026-05-18T00:29:13Z"},{"alias_kind":"arxiv_version","alias_value":"1704.08750v4","created_at":"2026-05-18T00:29:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.08750","created_at":"2026-05-18T00:29:13Z"},{"alias_kind":"pith_short_12","alias_value":"J3VBD7M34VHP","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"J3VBD7M34VHPT7XJ","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"J3VBD7M3","created_at":"2026-05-18T12:31:21Z"}],"graph_snapshots":[{"event_id":"sha256:4bf5315c82f798ffea29f5808a5e1438d543ce7be428734da2a28b30167c2897","target":"graph","created_at":"2026-05-18T00:29:13Z","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":"The polymer representations, which are partially motivated by loop quantum gravity, have been suggested as alternative schemes to quantize the matter fields. Here we apply a version of the polymer representations to the free electromagnetic field, in a reduced phase space setting, and derive the corresponding effective (i.e., semiclassical) Hamiltonian. We study the propagation of an electromagnetic pulse and we confront our theoretical results with gamma ray burst observations. This comparison reveals that the dimensionless polymer scale must be smaller than $4\\times 10^{-35}$, casting doubts","authors_text":"Angel Garcia-Chung, Saeed Rastgoo, Yuri Bonder","cross_cats":["astro-ph.HE","hep-ph","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-04-27T21:21:48Z","title":"Bounds on the Polymer Scale from Gamma Ray Bursts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.08750","kind":"arxiv","version":4},"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:a476973bd2d3d468460ac63622fff453b17aef1831a06b51822f58e3577ab1eb","target":"record","created_at":"2026-05-18T00:29:13Z","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":"8176a5bb73269a35907d9a5e00a476ef3320c304d30e9fd92a9e0347d3faa846","cross_cats_sorted":["astro-ph.HE","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-04-27T21:21:48Z","title_canon_sha256":"d722c55af3d14253fd72779d06c97fff512969f4cb73473e25350585d50331fa"},"schema_version":"1.0","source":{"id":"1704.08750","kind":"arxiv","version":4}},"canonical_sha256":"4eea11fd9be54ef9fee91d11421f86fa269588883296799651b5c1a06283c456","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4eea11fd9be54ef9fee91d11421f86fa269588883296799651b5c1a06283c456","first_computed_at":"2026-05-18T00:29:13.362105Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:29:13.362105Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"h4hjEriTB8Afq1BZFY3tGfMXBGkNAK1S5HQVkux/J2kWyODv/6nJ2QikknrLE4ETutVqdLfKnQibxLrQPA8vDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:29:13.362737Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.08750","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a476973bd2d3d468460ac63622fff453b17aef1831a06b51822f58e3577ab1eb","sha256:4bf5315c82f798ffea29f5808a5e1438d543ce7be428734da2a28b30167c2897"],"state_sha256":"1c5c89e809cda35939b4f51cc582c63a8d16c1da7dd6b33fb2ac39e829cd3f70"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d2lzeBM22La6N3jTkybSlbLZbS/uv19K4s+IUhcLa2L97ktWGHT82ZQ1lqeeTVU+AElmLNxCe9O02Jc0VIQFDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T13:05:05.992066Z","bundle_sha256":"224e0c55b531e455985f0c9e8d99c8abd556e7550ba3c2f49936e4e35aaebeba"}}