{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:U5C2AIDJMNTVUUY5B7ET3NH6N7","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":"fe39f70f46dff57a18d0a00e1a30c0ca6388f23b9569116ce46241b60d2127c1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-03-27T18:24:38Z","title_canon_sha256":"0f4977a2b7e91862ff958949460c4712375cc296a016f6283c267a80a108802a"},"schema_version":"1.0","source":{"id":"1503.08173","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.08173","created_at":"2026-05-18T01:29:02Z"},{"alias_kind":"arxiv_version","alias_value":"1503.08173v2","created_at":"2026-05-18T01:29:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.08173","created_at":"2026-05-18T01:29:02Z"},{"alias_kind":"pith_short_12","alias_value":"U5C2AIDJMNTV","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"U5C2AIDJMNTVUUY5","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"U5C2AIDJ","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:8ba96f58dc3e3f140111fa03e5e17adc5b43f639ed640987ba4b4fe271898a4f","target":"graph","created_at":"2026-05-18T01:29:02Z","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 experimentally investigate the dielectric response of the low-dimensional gapped quantum magnet Cu$_2$Cl$_{4}\\cdot$H$_8$C$_4$SO$_2$ near a magnetic field-induced quantum critical point, which separates the quantum-disordered and helimagnetic ground states. The observed magnetocapacitive effect originates from an improper ferroelectric nature of the transition, which itself is perhaps one of the best known realizations of Bose--Einstein condensation of magnons. Despite that, we find that the magnetocapacitive effect associated with the transition exhibits huge and very unusual anharmonicitie","authors_text":"A. Reichert, A. Zheludev, E. Wulf, K. Yu. Povarov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-03-27T18:24:38Z","title":"Giant dielectric nonlinearities at a magnetic Bose-Einstein condensation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.08173","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:dd3c10f87847e3d76bf1719b65205064f2806d91a26a9b119cd7befff847ceb6","target":"record","created_at":"2026-05-18T01:29:02Z","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":"fe39f70f46dff57a18d0a00e1a30c0ca6388f23b9569116ce46241b60d2127c1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-03-27T18:24:38Z","title_canon_sha256":"0f4977a2b7e91862ff958949460c4712375cc296a016f6283c267a80a108802a"},"schema_version":"1.0","source":{"id":"1503.08173","kind":"arxiv","version":2}},"canonical_sha256":"a745a0206963675a531d0fc93db4fe6fe8bced7d5983bfd36f00073d29865ed2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a745a0206963675a531d0fc93db4fe6fe8bced7d5983bfd36f00073d29865ed2","first_computed_at":"2026-05-18T01:29:02.566018Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:29:02.566018Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"C2t2np3foZ/99/DX+HggvGA4yQhusOOe8u/kgNxo2xZxw8PWDx+5bgKBiEHdixPuaacE1FxxkjUYnqI2c8FdDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:29:02.566660Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.08173","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dd3c10f87847e3d76bf1719b65205064f2806d91a26a9b119cd7befff847ceb6","sha256:8ba96f58dc3e3f140111fa03e5e17adc5b43f639ed640987ba4b4fe271898a4f"],"state_sha256":"1862778eaeec3a3dd37b51a3291ecaf1742f434e8d460342dbbdeaca519fee15"}