{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:7VOOJU5CMHJPWZOK4DVYXFQMFF","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":"bb67c2f310a36cd1bce1a82ea98077b50fc69ecfdd901936fb45e5f2b122b69b","cross_cats_sorted":["cond-mat.other","cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-11-09T21:00:03Z","title_canon_sha256":"e8a4c4215f8ad22c7d7b04d1e66c5a8a07019f6178992bf7c6bb1dee4e03f83d"},"schema_version":"1.0","source":{"id":"1511.02866","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.02866","created_at":"2026-05-18T01:08:45Z"},{"alias_kind":"arxiv_version","alias_value":"1511.02866v1","created_at":"2026-05-18T01:08:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.02866","created_at":"2026-05-18T01:08:45Z"},{"alias_kind":"pith_short_12","alias_value":"7VOOJU5CMHJP","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"7VOOJU5CMHJPWZOK","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"7VOOJU5C","created_at":"2026-05-18T12:29:10Z"}],"graph_snapshots":[{"event_id":"sha256:fdc8ee9afbeb39349564b7f526400291a399257b29c0f91eacd199cc15f66779","target":"graph","created_at":"2026-05-18T01:08:45Z","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 provide a theoretical explanation for the optical modes observed in inelastic neutron scattering (INS) on the bcc solid phase of helium 4 [T. Markovich, E. Polturak, J. Bossy, and E. Farhi, Phys. Rev. Lett. 88, 195301 (2002)]. We argue that these excitations are amplitude (Higgs) modes associated with fluctuations of the crystal order parameter within the unit cell. We present an analysis of the modes based on an effective Ginzburg-Landau model, classify them according to their symmetry properties, and compute their signature in INS experiments. In addition, we calculate the dynamical struc","authors_text":"Assa Auerbach, Daniel P. Arovas, Daniel Podolsky, Heloise Nonne, Snir Gazit","cross_cats":["cond-mat.other","cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-11-09T21:00:03Z","title":"Collective modes in a quantum solid"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.02866","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":"sha256:92ef34a9795e851edad9deb443fe998ccf80287cc3e4e21693ec46e4699ffe02","target":"record","created_at":"2026-05-18T01:08:45Z","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":"bb67c2f310a36cd1bce1a82ea98077b50fc69ecfdd901936fb45e5f2b122b69b","cross_cats_sorted":["cond-mat.other","cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-11-09T21:00:03Z","title_canon_sha256":"e8a4c4215f8ad22c7d7b04d1e66c5a8a07019f6178992bf7c6bb1dee4e03f83d"},"schema_version":"1.0","source":{"id":"1511.02866","kind":"arxiv","version":1}},"canonical_sha256":"fd5ce4d3a261d2fb65cae0eb8b960c296fee02dc5ed78417de6b6934bacf84de","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fd5ce4d3a261d2fb65cae0eb8b960c296fee02dc5ed78417de6b6934bacf84de","first_computed_at":"2026-05-18T01:08:45.301084Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:45.301084Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UfzvWFOZRroeNUXC3U+nilvryoJbgd+c4KT4Kac3YsXBDN1UBIjzPPa23O/K1nwresKq4lkZR7BivvRR0pPMBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:45.301483Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.02866","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:92ef34a9795e851edad9deb443fe998ccf80287cc3e4e21693ec46e4699ffe02","sha256:fdc8ee9afbeb39349564b7f526400291a399257b29c0f91eacd199cc15f66779"],"state_sha256":"50f768a1c9ca090bc24510a9ae7f4d4c41a8c45289f7e203e095b7c3d5c19bfc"}