{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:I54Q7QT53JNSIKLOEPTIO7LDOA","short_pith_number":"pith:I54Q7QT5","canonical_record":{"source":{"id":"1211.5782","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-11-25T17:06:05Z","cross_cats_sorted":[],"title_canon_sha256":"142c1f6f9d5ab4d0db0abd95359f8f9009687683fe3f7f443b04e01c67784f47","abstract_canon_sha256":"09b98babb56e371489ae15dc4b44ec9a44a456aee2706750813ba45dfdb7aa6a"},"schema_version":"1.0"},"canonical_sha256":"47790fc27dda5b24296e23e6877d63703766587102f826c6e23cee66ccac1094","source":{"kind":"arxiv","id":"1211.5782","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.5782","created_at":"2026-05-18T03:14:39Z"},{"alias_kind":"arxiv_version","alias_value":"1211.5782v3","created_at":"2026-05-18T03:14:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.5782","created_at":"2026-05-18T03:14:39Z"},{"alias_kind":"pith_short_12","alias_value":"I54Q7QT53JNS","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"I54Q7QT53JNSIKLO","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"I54Q7QT5","created_at":"2026-05-18T12:27:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:I54Q7QT53JNSIKLOEPTIO7LDOA","target":"record","payload":{"canonical_record":{"source":{"id":"1211.5782","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-11-25T17:06:05Z","cross_cats_sorted":[],"title_canon_sha256":"142c1f6f9d5ab4d0db0abd95359f8f9009687683fe3f7f443b04e01c67784f47","abstract_canon_sha256":"09b98babb56e371489ae15dc4b44ec9a44a456aee2706750813ba45dfdb7aa6a"},"schema_version":"1.0"},"canonical_sha256":"47790fc27dda5b24296e23e6877d63703766587102f826c6e23cee66ccac1094","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:14:39.293022Z","signature_b64":"+SDOAjMqXHCyJlk8kAdpLGpoDZzWSDdxC0c/lJrqOTlQuYA1MYzUYv+mmXuv6OAuWKKXEUV0075kfQU2siqiAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"47790fc27dda5b24296e23e6877d63703766587102f826c6e23cee66ccac1094","last_reissued_at":"2026-05-18T03:14:39.292467Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:14:39.292467Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1211.5782","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:14:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O6tMdFbLJ7tNTTQw5j9+VRPv+WEaSzpSVsQrmFP+kzx+cQbAdwQoegvTww/y/qa3Bn6BqLJcNXsQTd99W+wEAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T05:21:15.197615Z"},"content_sha256":"29e17b6aefee8b2bcb164b50548d7e9eb8360192fbb4c4ccbcf168f83f105898","schema_version":"1.0","event_id":"sha256:29e17b6aefee8b2bcb164b50548d7e9eb8360192fbb4c4ccbcf168f83f105898"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:I54Q7QT53JNSIKLOEPTIO7LDOA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Field induced phase transitions in the helimagnet Ba2CuGe2O7","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"J. Chovan, M. Marder, N. Papanicolaou","submitted_at":"2012-11-25T17:06:05Z","abstract_excerpt":"We present a theoretical study of the two-dimensional spiral antiferromagnet Ba2CuGe2O7 in the presence of an external magnetic field. We employ a suitable nonlinear sigma model to calculate the T=0 phase diagram and the associated low-energy spin dynamics for arbitrary canted fields, in general agreement with experiment. In particular, when the field is applied parallel to the c axis, a previously anticipated Dzyaloshinskii-type incommensurate-to-commensurate phase transition is actually mediated by an intermediate phase, in agreement with our earlier theoretical prediction confirmed by the r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.5782","kind":"arxiv","version":3},"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":"2026-05-18T03:14:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1zpl5VTBaBrawfnVS1EsOz6xDKHoCqmo8d1BeoHLdN3mQ7/pSjhzUx1bfGTiPc0DNxZsqNPkbvqOwBsQHiCWDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T05:21:15.197965Z"},"content_sha256":"b1a33ff7b155b1751a85a101885a7c5c8b2945ca08540001037a1443216f32f9","schema_version":"1.0","event_id":"sha256:b1a33ff7b155b1751a85a101885a7c5c8b2945ca08540001037a1443216f32f9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/I54Q7QT53JNSIKLOEPTIO7LDOA/bundle.json","state_url":"https://pith.science/pith/I54Q7QT53JNSIKLOEPTIO7LDOA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/I54Q7QT53JNSIKLOEPTIO7LDOA/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":"2026-06-01T05:21:15Z","links":{"resolver":"https://pith.science/pith/I54Q7QT53JNSIKLOEPTIO7LDOA","bundle":"https://pith.science/pith/I54Q7QT53JNSIKLOEPTIO7LDOA/bundle.json","state":"https://pith.science/pith/I54Q7QT53JNSIKLOEPTIO7LDOA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/I54Q7QT53JNSIKLOEPTIO7LDOA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:I54Q7QT53JNSIKLOEPTIO7LDOA","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":"09b98babb56e371489ae15dc4b44ec9a44a456aee2706750813ba45dfdb7aa6a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-11-25T17:06:05Z","title_canon_sha256":"142c1f6f9d5ab4d0db0abd95359f8f9009687683fe3f7f443b04e01c67784f47"},"schema_version":"1.0","source":{"id":"1211.5782","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.5782","created_at":"2026-05-18T03:14:39Z"},{"alias_kind":"arxiv_version","alias_value":"1211.5782v3","created_at":"2026-05-18T03:14:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.5782","created_at":"2026-05-18T03:14:39Z"},{"alias_kind":"pith_short_12","alias_value":"I54Q7QT53JNS","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"I54Q7QT53JNSIKLO","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"I54Q7QT5","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:b1a33ff7b155b1751a85a101885a7c5c8b2945ca08540001037a1443216f32f9","target":"graph","created_at":"2026-05-18T03:14:39Z","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":"We present a theoretical study of the two-dimensional spiral antiferromagnet Ba2CuGe2O7 in the presence of an external magnetic field. We employ a suitable nonlinear sigma model to calculate the T=0 phase diagram and the associated low-energy spin dynamics for arbitrary canted fields, in general agreement with experiment. In particular, when the field is applied parallel to the c axis, a previously anticipated Dzyaloshinskii-type incommensurate-to-commensurate phase transition is actually mediated by an intermediate phase, in agreement with our earlier theoretical prediction confirmed by the r","authors_text":"J. Chovan, M. Marder, N. Papanicolaou","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-11-25T17:06:05Z","title":"Field induced phase transitions in the helimagnet Ba2CuGe2O7"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.5782","kind":"arxiv","version":3},"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":"sha256:29e17b6aefee8b2bcb164b50548d7e9eb8360192fbb4c4ccbcf168f83f105898","target":"record","created_at":"2026-05-18T03:14:39Z","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":"09b98babb56e371489ae15dc4b44ec9a44a456aee2706750813ba45dfdb7aa6a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-11-25T17:06:05Z","title_canon_sha256":"142c1f6f9d5ab4d0db0abd95359f8f9009687683fe3f7f443b04e01c67784f47"},"schema_version":"1.0","source":{"id":"1211.5782","kind":"arxiv","version":3}},"canonical_sha256":"47790fc27dda5b24296e23e6877d63703766587102f826c6e23cee66ccac1094","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"47790fc27dda5b24296e23e6877d63703766587102f826c6e23cee66ccac1094","first_computed_at":"2026-05-18T03:14:39.292467Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:14:39.292467Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+SDOAjMqXHCyJlk8kAdpLGpoDZzWSDdxC0c/lJrqOTlQuYA1MYzUYv+mmXuv6OAuWKKXEUV0075kfQU2siqiAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:14:39.293022Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.5782","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:29e17b6aefee8b2bcb164b50548d7e9eb8360192fbb4c4ccbcf168f83f105898","sha256:b1a33ff7b155b1751a85a101885a7c5c8b2945ca08540001037a1443216f32f9"],"state_sha256":"1c68dcdb1ac402922c65c423a789ed54191b991ccebbe590d51758cd5ac75ecf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CrrOrQWbNJZ44fF2EY9dMRCoblOEASOx7WlZDgu8HW4i25JGYaa1L53dov7oQzmNTvBEqoAdUvoA2Y59OwJCDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T05:21:15.200036Z","bundle_sha256":"d2c74e9bb2771c12959903c8d511f77a2d007cb9a14ae47328346bad6a6ddfc7"}}