{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:QKXM25L6UNEFGHM4OVXO5ODOFW","short_pith_number":"pith:QKXM25L6","canonical_record":{"source":{"id":"1501.06304","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-01-26T10:02:42Z","cross_cats_sorted":[],"title_canon_sha256":"587278447598212cd12ab4905d8298e71f64e25b0d8cce7607370c411f09d686","abstract_canon_sha256":"b0e0354c5eee6575e45aae7f24b07f282fe34187ade3e35edf933bafd2b6c0c2"},"schema_version":"1.0"},"canonical_sha256":"82aecd757ea348531d9c756eeeb86e2daaaaec9f9a47868a0c61ab2fdd1f3a94","source":{"kind":"arxiv","id":"1501.06304","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.06304","created_at":"2026-05-18T01:41:08Z"},{"alias_kind":"arxiv_version","alias_value":"1501.06304v1","created_at":"2026-05-18T01:41:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.06304","created_at":"2026-05-18T01:41:08Z"},{"alias_kind":"pith_short_12","alias_value":"QKXM25L6UNEF","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"QKXM25L6UNEFGHM4","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"QKXM25L6","created_at":"2026-05-18T12:29:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:QKXM25L6UNEFGHM4OVXO5ODOFW","target":"record","payload":{"canonical_record":{"source":{"id":"1501.06304","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-01-26T10:02:42Z","cross_cats_sorted":[],"title_canon_sha256":"587278447598212cd12ab4905d8298e71f64e25b0d8cce7607370c411f09d686","abstract_canon_sha256":"b0e0354c5eee6575e45aae7f24b07f282fe34187ade3e35edf933bafd2b6c0c2"},"schema_version":"1.0"},"canonical_sha256":"82aecd757ea348531d9c756eeeb86e2daaaaec9f9a47868a0c61ab2fdd1f3a94","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:08.736280Z","signature_b64":"jhgQlezU09r4nmBjGCz0hr/b0Z6neXVBI5yB2G2ZxGW7Br4BAOhJE5C35mQ9g4oV32JFwOzq8jSXh2aKnNmvBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"82aecd757ea348531d9c756eeeb86e2daaaaec9f9a47868a0c61ab2fdd1f3a94","last_reissued_at":"2026-05-18T01:41:08.735575Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:08.735575Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1501.06304","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":"2026-05-18T01:41:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mDZmAhEun9FGca9dmS+8ZO3SsFGo5bVT/MJmQSn+mJBjJgdV1nlYCEJ/LPBthg7Wz8McZm6+H95/vQ6OjvGgBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T23:36:50.854425Z"},"content_sha256":"79a9439e6fef2820768d17494eb69f3d384502f96a220f71f483f7969cb85d8e","schema_version":"1.0","event_id":"sha256:79a9439e6fef2820768d17494eb69f3d384502f96a220f71f483f7969cb85d8e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:QKXM25L6UNEFGHM4OVXO5ODOFW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Primordial magnetic fields from self-ordering scalar fields","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Kiyotomo Ichiki, Kouichirou Horiguchi, Naoshi Sugiyama, Toyokazu Sekiguchi","submitted_at":"2015-01-26T10:02:42Z","abstract_excerpt":"A symmetry-breaking phase transition in the early universe could have led to the formation of cosmic defects. Because these defects dynamically excite not only scalar and tensor type cosmological perturbations but also vector type ones, they may serve as a source of primordial magnetic fields. In this study, we calculate the time evolution and the spectrum of magnetic fields that are generated by a type of cosmic defects, called global textures, using the non-linear sigma (NLSM) model. Based on the standard cosmological perturbation theory, we show, both analytically and numerically, that a ve"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.06304","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":""},"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":"2026-05-18T01:41:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fzewo4XIMfzsSI7+4COP6Vlzp2rPHqUrVw3BOI+GDu8xLBJmm9o3BDMgcdux2JEpQhDQt/oBV/4QtmyJa0WhAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T23:36:50.854788Z"},"content_sha256":"1accb2f256f6013c338dfd3f430e7c65355ac1b42390b41921a7480a585334f5","schema_version":"1.0","event_id":"sha256:1accb2f256f6013c338dfd3f430e7c65355ac1b42390b41921a7480a585334f5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QKXM25L6UNEFGHM4OVXO5ODOFW/bundle.json","state_url":"https://pith.science/pith/QKXM25L6UNEFGHM4OVXO5ODOFW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QKXM25L6UNEFGHM4OVXO5ODOFW/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":"2026-06-27T23:36:50Z","links":{"resolver":"https://pith.science/pith/QKXM25L6UNEFGHM4OVXO5ODOFW","bundle":"https://pith.science/pith/QKXM25L6UNEFGHM4OVXO5ODOFW/bundle.json","state":"https://pith.science/pith/QKXM25L6UNEFGHM4OVXO5ODOFW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QKXM25L6UNEFGHM4OVXO5ODOFW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:QKXM25L6UNEFGHM4OVXO5ODOFW","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":"b0e0354c5eee6575e45aae7f24b07f282fe34187ade3e35edf933bafd2b6c0c2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-01-26T10:02:42Z","title_canon_sha256":"587278447598212cd12ab4905d8298e71f64e25b0d8cce7607370c411f09d686"},"schema_version":"1.0","source":{"id":"1501.06304","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.06304","created_at":"2026-05-18T01:41:08Z"},{"alias_kind":"arxiv_version","alias_value":"1501.06304v1","created_at":"2026-05-18T01:41:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.06304","created_at":"2026-05-18T01:41:08Z"},{"alias_kind":"pith_short_12","alias_value":"QKXM25L6UNEF","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"QKXM25L6UNEFGHM4","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"QKXM25L6","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:1accb2f256f6013c338dfd3f430e7c65355ac1b42390b41921a7480a585334f5","target":"graph","created_at":"2026-05-18T01:41:08Z","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":"A symmetry-breaking phase transition in the early universe could have led to the formation of cosmic defects. Because these defects dynamically excite not only scalar and tensor type cosmological perturbations but also vector type ones, they may serve as a source of primordial magnetic fields. In this study, we calculate the time evolution and the spectrum of magnetic fields that are generated by a type of cosmic defects, called global textures, using the non-linear sigma (NLSM) model. Based on the standard cosmological perturbation theory, we show, both analytically and numerically, that a ve","authors_text":"Kiyotomo Ichiki, Kouichirou Horiguchi, Naoshi Sugiyama, Toyokazu Sekiguchi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-01-26T10:02:42Z","title":"Primordial magnetic fields from self-ordering scalar fields"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.06304","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":"sha256:79a9439e6fef2820768d17494eb69f3d384502f96a220f71f483f7969cb85d8e","target":"record","created_at":"2026-05-18T01:41:08Z","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":"b0e0354c5eee6575e45aae7f24b07f282fe34187ade3e35edf933bafd2b6c0c2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-01-26T10:02:42Z","title_canon_sha256":"587278447598212cd12ab4905d8298e71f64e25b0d8cce7607370c411f09d686"},"schema_version":"1.0","source":{"id":"1501.06304","kind":"arxiv","version":1}},"canonical_sha256":"82aecd757ea348531d9c756eeeb86e2daaaaec9f9a47868a0c61ab2fdd1f3a94","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"82aecd757ea348531d9c756eeeb86e2daaaaec9f9a47868a0c61ab2fdd1f3a94","first_computed_at":"2026-05-18T01:41:08.735575Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:08.735575Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jhgQlezU09r4nmBjGCz0hr/b0Z6neXVBI5yB2G2ZxGW7Br4BAOhJE5C35mQ9g4oV32JFwOzq8jSXh2aKnNmvBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:08.736280Z","signed_message":"canonical_sha256_bytes"},"source_id":"1501.06304","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:79a9439e6fef2820768d17494eb69f3d384502f96a220f71f483f7969cb85d8e","sha256:1accb2f256f6013c338dfd3f430e7c65355ac1b42390b41921a7480a585334f5"],"state_sha256":"b5c5e97b1566d658403a2f3df0f0088bdbc58b44b13e79562ef348d822a635c1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FgqkhWlUHx4A6kF2EMlw9fXs5NmW8CjQ+XOs+SKPofeM5w8FrrnEYJAcLvunsU9a7g/WRoqnAyJ5QkROzTGXDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T23:36:50.856737Z","bundle_sha256":"73b1d61a73a7cc7694082ebbae541ac574876e15c9bc7b8f432be31c2d24a7cd"}}