{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:JCV27LXYVZIH6XYER2YPB42PMM","short_pith_number":"pith:JCV27LXY","canonical_record":{"source":{"id":"2301.08340","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-01-19T22:09:53Z","cross_cats_sorted":[],"title_canon_sha256":"9eb45366b0d90a3b26214f76f2fa50e386edc09ab447a36c0488a5a8c7d8d6d1","abstract_canon_sha256":"79ef079a3ce8fd6395bebdc7709bb0bc5d82ed6903cb903a20fc107390d2d471"},"schema_version":"1.0"},"canonical_sha256":"48abafaef8ae507f5f048eb0f0f34f6306cc8e82a317ec7f5d0efbcb19411f6f","source":{"kind":"arxiv","id":"2301.08340","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.08340","created_at":"2026-07-05T05:34:35Z"},{"alias_kind":"arxiv_version","alias_value":"2301.08340v1","created_at":"2026-07-05T05:34:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.08340","created_at":"2026-07-05T05:34:35Z"},{"alias_kind":"pith_short_12","alias_value":"JCV27LXYVZIH","created_at":"2026-07-05T05:34:35Z"},{"alias_kind":"pith_short_16","alias_value":"JCV27LXYVZIH6XYE","created_at":"2026-07-05T05:34:35Z"},{"alias_kind":"pith_short_8","alias_value":"JCV27LXY","created_at":"2026-07-05T05:34:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:JCV27LXYVZIH6XYER2YPB42PMM","target":"record","payload":{"canonical_record":{"source":{"id":"2301.08340","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-01-19T22:09:53Z","cross_cats_sorted":[],"title_canon_sha256":"9eb45366b0d90a3b26214f76f2fa50e386edc09ab447a36c0488a5a8c7d8d6d1","abstract_canon_sha256":"79ef079a3ce8fd6395bebdc7709bb0bc5d82ed6903cb903a20fc107390d2d471"},"schema_version":"1.0"},"canonical_sha256":"48abafaef8ae507f5f048eb0f0f34f6306cc8e82a317ec7f5d0efbcb19411f6f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:34:35.137516Z","signature_b64":"glNGg5TUbfpiBEdFnEe/WMQXTv6YDidzGp0VxmQSm8lHa9wrhUlkMn1JuWSVD+XLZfLU+bXL8CvZ0+9BsRxFCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"48abafaef8ae507f5f048eb0f0f34f6306cc8e82a317ec7f5d0efbcb19411f6f","last_reissued_at":"2026-07-05T05:34:35.136989Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:34:35.136989Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2301.08340","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:34:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UmEr9yNTir6G0GW+V0mmpo2AcZluogbnNBvLmC0Bj/I/yKRmStFTOSd7Pvl3V/mwLFAm0de4IvnrVMYffZ/UAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T09:28:25.796107Z"},"content_sha256":"e04b2f2e362d6f271a8d270091604ad083b4d744c21ca32580464f5ad0462b77","schema_version":"1.0","event_id":"sha256:e04b2f2e362d6f271a8d270091604ad083b4d744c21ca32580464f5ad0462b77"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:JCV27LXYVZIH6XYER2YPB42PMM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"RIXS observation of bond-directional nearest-neighbor excitations in the Kitaev material Na$_2$IrO$_3$","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"C. Hickey, Ch. J. Sahle, F. Breitner, G. Monaco, I.-M. Pietsch, J. Attig, Jungho Kim, J. van den Brink, K. Hopfer, M. Gr\\\"uninger, M. H. Upton, M. Magnaterra, M. Moretti Sala, P. Gegenwart, P. H. M. van Loosdrecht, S. Trebst","submitted_at":"2023-01-19T22:09:53Z","abstract_excerpt":"Spin-orbit coupling locks spin direction and spatial orientation and generates, in semi-classical magnets, a local spin easy-axis and associated ordering. Quantum spin-1/2's defy this fate: rather than spins becoming locally anisotropic, the spin-spin interactions do. Consequently interactions become dependent on the spatial orientation of bonds between spins, prime theoretical examples of which are Kitaev magnets. Bond-directional interactions imply the existence of bond-directional magnetic modes, predicted spin excitations that render crystallographically equivalent bonds magnetically inequ"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.08340","kind":"arxiv","version":1},"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/2301.08340/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":"2026-07-05T05:34:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hZvxJ7uEK+SFPR6LZcDo7UwC/VNdOeJlaS/80M70vynSartg4/7dXIUUu9oAd0ghgcEVWgzlRu2qC5mcXd0KAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T09:28:25.796504Z"},"content_sha256":"c0d0c5ecc59cd14b6d4369b73391b5d8ad1cf5e3dfa6c548cff4ca8aa571a6a0","schema_version":"1.0","event_id":"sha256:c0d0c5ecc59cd14b6d4369b73391b5d8ad1cf5e3dfa6c548cff4ca8aa571a6a0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JCV27LXYVZIH6XYER2YPB42PMM/bundle.json","state_url":"https://pith.science/pith/JCV27LXYVZIH6XYER2YPB42PMM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JCV27LXYVZIH6XYER2YPB42PMM/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":"2026-07-05T09:28:25Z","links":{"resolver":"https://pith.science/pith/JCV27LXYVZIH6XYER2YPB42PMM","bundle":"https://pith.science/pith/JCV27LXYVZIH6XYER2YPB42PMM/bundle.json","state":"https://pith.science/pith/JCV27LXYVZIH6XYER2YPB42PMM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JCV27LXYVZIH6XYER2YPB42PMM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:JCV27LXYVZIH6XYER2YPB42PMM","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":"79ef079a3ce8fd6395bebdc7709bb0bc5d82ed6903cb903a20fc107390d2d471","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-01-19T22:09:53Z","title_canon_sha256":"9eb45366b0d90a3b26214f76f2fa50e386edc09ab447a36c0488a5a8c7d8d6d1"},"schema_version":"1.0","source":{"id":"2301.08340","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.08340","created_at":"2026-07-05T05:34:35Z"},{"alias_kind":"arxiv_version","alias_value":"2301.08340v1","created_at":"2026-07-05T05:34:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.08340","created_at":"2026-07-05T05:34:35Z"},{"alias_kind":"pith_short_12","alias_value":"JCV27LXYVZIH","created_at":"2026-07-05T05:34:35Z"},{"alias_kind":"pith_short_16","alias_value":"JCV27LXYVZIH6XYE","created_at":"2026-07-05T05:34:35Z"},{"alias_kind":"pith_short_8","alias_value":"JCV27LXY","created_at":"2026-07-05T05:34:35Z"}],"graph_snapshots":[{"event_id":"sha256:c0d0c5ecc59cd14b6d4369b73391b5d8ad1cf5e3dfa6c548cff4ca8aa571a6a0","target":"graph","created_at":"2026-07-05T05:34:35Z","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/2301.08340/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Spin-orbit coupling locks spin direction and spatial orientation and generates, in semi-classical magnets, a local spin easy-axis and associated ordering. Quantum spin-1/2's defy this fate: rather than spins becoming locally anisotropic, the spin-spin interactions do. Consequently interactions become dependent on the spatial orientation of bonds between spins, prime theoretical examples of which are Kitaev magnets. Bond-directional interactions imply the existence of bond-directional magnetic modes, predicted spin excitations that render crystallographically equivalent bonds magnetically inequ","authors_text":"C. Hickey, Ch. J. Sahle, F. Breitner, G. Monaco, I.-M. Pietsch, J. Attig, Jungho Kim, J. van den Brink, K. Hopfer, M. Gr\\\"uninger, M. H. Upton, M. Magnaterra, M. Moretti Sala, P. Gegenwart, P. H. M. van Loosdrecht, S. Trebst","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-01-19T22:09:53Z","title":"RIXS observation of bond-directional nearest-neighbor excitations in the Kitaev material Na$_2$IrO$_3$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.08340","kind":"arxiv","version":1},"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:e04b2f2e362d6f271a8d270091604ad083b4d744c21ca32580464f5ad0462b77","target":"record","created_at":"2026-07-05T05:34:35Z","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":"79ef079a3ce8fd6395bebdc7709bb0bc5d82ed6903cb903a20fc107390d2d471","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-01-19T22:09:53Z","title_canon_sha256":"9eb45366b0d90a3b26214f76f2fa50e386edc09ab447a36c0488a5a8c7d8d6d1"},"schema_version":"1.0","source":{"id":"2301.08340","kind":"arxiv","version":1}},"canonical_sha256":"48abafaef8ae507f5f048eb0f0f34f6306cc8e82a317ec7f5d0efbcb19411f6f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"48abafaef8ae507f5f048eb0f0f34f6306cc8e82a317ec7f5d0efbcb19411f6f","first_computed_at":"2026-07-05T05:34:35.136989Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:34:35.136989Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"glNGg5TUbfpiBEdFnEe/WMQXTv6YDidzGp0VxmQSm8lHa9wrhUlkMn1JuWSVD+XLZfLU+bXL8CvZ0+9BsRxFCw==","signature_status":"signed_v1","signed_at":"2026-07-05T05:34:35.137516Z","signed_message":"canonical_sha256_bytes"},"source_id":"2301.08340","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e04b2f2e362d6f271a8d270091604ad083b4d744c21ca32580464f5ad0462b77","sha256:c0d0c5ecc59cd14b6d4369b73391b5d8ad1cf5e3dfa6c548cff4ca8aa571a6a0"],"state_sha256":"fff9735542bde62e753de0b71880a11daff8bff81ae36b16ccbbcf6ff0e73e5f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sMbgc7dyI8m+twccxwnXkWfYOkw0ZJMr+QnKLukRdgZn004ob5AA7t2vkZUMYgT+33RPSyB0OXIsGWLLO+4wDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T09:28:25.798491Z","bundle_sha256":"8a38b300119b1beaae10c437a4284cf72257e9577ac132c4ca08807e47c6a5d2"}}