{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:AUU4XVV4WV3ITSWEBSOEYQ3UQP","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":"fdd02771dfa9e0616d44798208893e56a1b4984b4b2ba3377f5124768bd1b52c","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.other","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2017-05-19T09:53:35Z","title_canon_sha256":"aea31f4230d4816154cddda75ff19396012129eee66ecc1cdaae161047465e1f"},"schema_version":"1.0","source":{"id":"1705.06914","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.06914","created_at":"2026-05-17T23:50:02Z"},{"alias_kind":"arxiv_version","alias_value":"1705.06914v2","created_at":"2026-05-17T23:50:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.06914","created_at":"2026-05-17T23:50:02Z"},{"alias_kind":"pith_short_12","alias_value":"AUU4XVV4WV3I","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_16","alias_value":"AUU4XVV4WV3ITSWE","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_8","alias_value":"AUU4XVV4","created_at":"2026-05-18T12:31:08Z"}],"graph_snapshots":[{"event_id":"sha256:272231a324249486efa8689cd41e9a4c7b8419e1721d580062249223d17baee0","target":"graph","created_at":"2026-05-17T23:50:02Z","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":"The concept of a roton, a special kind of elementary excitation, forming a minimum of energy at finite momentum, has been essential to understand the properties of superfluid $^4$He. In quantum liquids, rotons arise from the strong interparticle interactions, whose microscopic description remains debated. In the realm of highly-controllable quantum gases, a roton mode has been predicted to emerge due to magnetic dipole-dipole interactions despite of their weakly-interacting character. This prospect has raised considerable interest; yet roton modes in dipolar quantum gases have remained elusive","authors_text":"Daniel Petter, Falk Waechtler, Francesca Ferlaino, Giulia Faraoni, Jan Hendrik Becher, Lauriane Chomaz, Luis Santos, Manfred J. Mark, Rick M. W. van Bijnen, Simon Baier","cross_cats":["cond-mat.mtrl-sci","cond-mat.other","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2017-05-19T09:53:35Z","title":"Observation of Roton Mode Population in a Dipolar Quantum Gas"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.06914","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":"sha256:40fcc5b285e5975185131b22945aa5bcb4d0daa8fc2cb6a47f14919b5ba530ec","target":"record","created_at":"2026-05-17T23:50:02Z","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":"fdd02771dfa9e0616d44798208893e56a1b4984b4b2ba3377f5124768bd1b52c","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.other","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2017-05-19T09:53:35Z","title_canon_sha256":"aea31f4230d4816154cddda75ff19396012129eee66ecc1cdaae161047465e1f"},"schema_version":"1.0","source":{"id":"1705.06914","kind":"arxiv","version":2}},"canonical_sha256":"0529cbd6bcb57689cac40c9c4c437483e9db9bb644ac2b5780f22f99d33cdc70","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0529cbd6bcb57689cac40c9c4c437483e9db9bb644ac2b5780f22f99d33cdc70","first_computed_at":"2026-05-17T23:50:02.773086Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:02.773086Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"drE/rXvS/oxPjLzUafKZ9ap2CMbAAdX57eFrlZi+d4055ZW55Qa0Whlt0ulukYICJyBflvGa5k21gu80yWN2Bg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:02.773722Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.06914","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:40fcc5b285e5975185131b22945aa5bcb4d0daa8fc2cb6a47f14919b5ba530ec","sha256:272231a324249486efa8689cd41e9a4c7b8419e1721d580062249223d17baee0"],"state_sha256":"aca10cd0efc1fb300d30588e3b6cb9482166eb2c9e216ae6158d15cb5f19d289"}