{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:D3KDDRG5QAFOVG4AVNT5JDE3WW","short_pith_number":"pith:D3KDDRG5","canonical_record":{"source":{"id":"2012.08540","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2020-12-15T19:00:12Z","cross_cats_sorted":["hep-lat","quant-ph"],"title_canon_sha256":"81d4c6dd248cc17f409a6303282b833ada9a0c8c25d4df3c2fc886f9d809ef10","abstract_canon_sha256":"c3ab31d5f6c7b1a3a40f023ea4ead7ae08f5127f9de6ff3fb65c9847a5bdf319"},"schema_version":"1.0"},"canonical_sha256":"1ed431c4dd800aea9b80ab67d48c9bb58fabfce762ffaf2240cca5dbf45ec20e","source":{"kind":"arxiv","id":"2012.08540","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.08540","created_at":"2026-07-05T02:46:25Z"},{"alias_kind":"arxiv_version","alias_value":"2012.08540v2","created_at":"2026-07-05T02:46:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.08540","created_at":"2026-07-05T02:46:25Z"},{"alias_kind":"pith_short_12","alias_value":"D3KDDRG5QAFO","created_at":"2026-07-05T02:46:25Z"},{"alias_kind":"pith_short_16","alias_value":"D3KDDRG5QAFOVG4A","created_at":"2026-07-05T02:46:25Z"},{"alias_kind":"pith_short_8","alias_value":"D3KDDRG5","created_at":"2026-07-05T02:46:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:D3KDDRG5QAFOVG4AVNT5JDE3WW","target":"record","payload":{"canonical_record":{"source":{"id":"2012.08540","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2020-12-15T19:00:12Z","cross_cats_sorted":["hep-lat","quant-ph"],"title_canon_sha256":"81d4c6dd248cc17f409a6303282b833ada9a0c8c25d4df3c2fc886f9d809ef10","abstract_canon_sha256":"c3ab31d5f6c7b1a3a40f023ea4ead7ae08f5127f9de6ff3fb65c9847a5bdf319"},"schema_version":"1.0"},"canonical_sha256":"1ed431c4dd800aea9b80ab67d48c9bb58fabfce762ffaf2240cca5dbf45ec20e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:46:25.976413Z","signature_b64":"d4knr0sNgYOXAcwA9izDMxfRrQ2b2fl2oLN+IAI/HmTddYFzfhvleeStYONM25Vs/OEy8WcNCRztmH08ePRGDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1ed431c4dd800aea9b80ab67d48c9bb58fabfce762ffaf2240cca5dbf45ec20e","last_reissued_at":"2026-07-05T02:46:25.975904Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:46:25.975904Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2012.08540","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":"2026-07-05T02:46:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RCx0O9vAbwBm4JSpJ2AaHqJyOiAo2+L24Afp67xAE82ANHqujcKORAYqvZF3P8lRTffndje86Topu+DQtHuhDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-13T16:06:43.162683Z"},"content_sha256":"eb765543419952e49441515893c8f9af0c2a376ce9e82f6ebd354a551e5beb91","schema_version":"1.0","event_id":"sha256:eb765543419952e49441515893c8f9af0c2a376ce9e82f6ebd354a551e5beb91"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:D3KDDRG5QAFOVG4AVNT5JDE3WW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum scars from zero modes in an Abelian lattice gauge theory on ladders","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-lat","quant-ph"],"primary_cat":"cond-mat.str-el","authors_text":"Arnab Sen, Debasish Banerjee","submitted_at":"2020-12-15T19:00:12Z","abstract_excerpt":"We consider the spectrum of a $U(1)$ quantum link model where gauge fields are realized as $S=1/2$ spins and demonstrate a new mechanism for generating quantum many-body scars (high-energy eigenstates that violate the eigenstate thermalization hypothesis) in a constrained Hilbert space. Many-body dynamics with local constraints has attracted much attention due to the recent discovery of non-ergodic behavior in quantum simulators based on Rydberg atoms. Lattice gauge theories provide natural examples of constrained systems since physical states must be gauge-invariant. In our case, the Hamilton"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.08540","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/2012.08540/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":"2026-07-05T02:46:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cR8Xru4MNDNfgImlOUJBQ2Nw95oMstDJJ5+j3CACVjgoyevJn/FxwNE2TLhRrx25L61cwEv2S8bUwWnOJNfxAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-13T16:06:43.163061Z"},"content_sha256":"cad3efc45bf8a51e85023f7c5df119e64df015f7285ca5ee5cdb5ef8c1defbd8","schema_version":"1.0","event_id":"sha256:cad3efc45bf8a51e85023f7c5df119e64df015f7285ca5ee5cdb5ef8c1defbd8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/D3KDDRG5QAFOVG4AVNT5JDE3WW/bundle.json","state_url":"https://pith.science/pith/D3KDDRG5QAFOVG4AVNT5JDE3WW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/D3KDDRG5QAFOVG4AVNT5JDE3WW/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":"2026-07-13T16:06:43Z","links":{"resolver":"https://pith.science/pith/D3KDDRG5QAFOVG4AVNT5JDE3WW","bundle":"https://pith.science/pith/D3KDDRG5QAFOVG4AVNT5JDE3WW/bundle.json","state":"https://pith.science/pith/D3KDDRG5QAFOVG4AVNT5JDE3WW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/D3KDDRG5QAFOVG4AVNT5JDE3WW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:D3KDDRG5QAFOVG4AVNT5JDE3WW","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":"c3ab31d5f6c7b1a3a40f023ea4ead7ae08f5127f9de6ff3fb65c9847a5bdf319","cross_cats_sorted":["hep-lat","quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2020-12-15T19:00:12Z","title_canon_sha256":"81d4c6dd248cc17f409a6303282b833ada9a0c8c25d4df3c2fc886f9d809ef10"},"schema_version":"1.0","source":{"id":"2012.08540","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.08540","created_at":"2026-07-05T02:46:25Z"},{"alias_kind":"arxiv_version","alias_value":"2012.08540v2","created_at":"2026-07-05T02:46:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.08540","created_at":"2026-07-05T02:46:25Z"},{"alias_kind":"pith_short_12","alias_value":"D3KDDRG5QAFO","created_at":"2026-07-05T02:46:25Z"},{"alias_kind":"pith_short_16","alias_value":"D3KDDRG5QAFOVG4A","created_at":"2026-07-05T02:46:25Z"},{"alias_kind":"pith_short_8","alias_value":"D3KDDRG5","created_at":"2026-07-05T02:46:25Z"}],"graph_snapshots":[{"event_id":"sha256:cad3efc45bf8a51e85023f7c5df119e64df015f7285ca5ee5cdb5ef8c1defbd8","target":"graph","created_at":"2026-07-05T02:46:25Z","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/2012.08540/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We consider the spectrum of a $U(1)$ quantum link model where gauge fields are realized as $S=1/2$ spins and demonstrate a new mechanism for generating quantum many-body scars (high-energy eigenstates that violate the eigenstate thermalization hypothesis) in a constrained Hilbert space. Many-body dynamics with local constraints has attracted much attention due to the recent discovery of non-ergodic behavior in quantum simulators based on Rydberg atoms. Lattice gauge theories provide natural examples of constrained systems since physical states must be gauge-invariant. In our case, the Hamilton","authors_text":"Arnab Sen, Debasish Banerjee","cross_cats":["hep-lat","quant-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2020-12-15T19:00:12Z","title":"Quantum scars from zero modes in an Abelian lattice gauge theory on ladders"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.08540","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:eb765543419952e49441515893c8f9af0c2a376ce9e82f6ebd354a551e5beb91","target":"record","created_at":"2026-07-05T02:46:25Z","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":"c3ab31d5f6c7b1a3a40f023ea4ead7ae08f5127f9de6ff3fb65c9847a5bdf319","cross_cats_sorted":["hep-lat","quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2020-12-15T19:00:12Z","title_canon_sha256":"81d4c6dd248cc17f409a6303282b833ada9a0c8c25d4df3c2fc886f9d809ef10"},"schema_version":"1.0","source":{"id":"2012.08540","kind":"arxiv","version":2}},"canonical_sha256":"1ed431c4dd800aea9b80ab67d48c9bb58fabfce762ffaf2240cca5dbf45ec20e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1ed431c4dd800aea9b80ab67d48c9bb58fabfce762ffaf2240cca5dbf45ec20e","first_computed_at":"2026-07-05T02:46:25.975904Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:46:25.975904Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"d4knr0sNgYOXAcwA9izDMxfRrQ2b2fl2oLN+IAI/HmTddYFzfhvleeStYONM25Vs/OEy8WcNCRztmH08ePRGDg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:46:25.976413Z","signed_message":"canonical_sha256_bytes"},"source_id":"2012.08540","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eb765543419952e49441515893c8f9af0c2a376ce9e82f6ebd354a551e5beb91","sha256:cad3efc45bf8a51e85023f7c5df119e64df015f7285ca5ee5cdb5ef8c1defbd8"],"state_sha256":"a8fb7f5595238d6299c9b105431002fd16fc9b9812d8de611e1b92fcf1b382b9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lk+EGS086BGzHze8HHdJielxlbDLdoTfRTfRHImjL1Djxyh0weK5lWLbhoGP2ZlZ0VSzIcXBffV4d8lmgkiWBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-13T16:06:43.165302Z","bundle_sha256":"25bc9731841574fb672eebd9820f01e92895c8c5c64b999e4bf16b6117795c5e"}}