{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:Z2P5FY4BLFVWKSJLJXKLIECPLM","short_pith_number":"pith:Z2P5FY4B","canonical_record":{"source":{"id":"2005.08824","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-05-18T15:56:33Z","cross_cats_sorted":["astro-ph.CO","cond-mat.other","cond-mat.supr-con"],"title_canon_sha256":"f5bf300a88318084f42634eb1a9c1f9adc372da3e578585cdf401c9916820b22","abstract_canon_sha256":"22da76cf42e9e2011d043c887e256bfaaccdb636fcb491998de87e01ca1d01b8"},"schema_version":"1.0"},"canonical_sha256":"ce9fd2e381596b65492b4dd4b4104f5b09e8d977107d54c17cf54798ac3b909d","source":{"kind":"arxiv","id":"2005.08824","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.08824","created_at":"2026-07-05T02:50:05Z"},{"alias_kind":"arxiv_version","alias_value":"2005.08824v3","created_at":"2026-07-05T02:50:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.08824","created_at":"2026-07-05T02:50:05Z"},{"alias_kind":"pith_short_12","alias_value":"Z2P5FY4BLFVW","created_at":"2026-07-05T02:50:05Z"},{"alias_kind":"pith_short_16","alias_value":"Z2P5FY4BLFVWKSJL","created_at":"2026-07-05T02:50:05Z"},{"alias_kind":"pith_short_8","alias_value":"Z2P5FY4B","created_at":"2026-07-05T02:50:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:Z2P5FY4BLFVWKSJLJXKLIECPLM","target":"record","payload":{"canonical_record":{"source":{"id":"2005.08824","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-05-18T15:56:33Z","cross_cats_sorted":["astro-ph.CO","cond-mat.other","cond-mat.supr-con"],"title_canon_sha256":"f5bf300a88318084f42634eb1a9c1f9adc372da3e578585cdf401c9916820b22","abstract_canon_sha256":"22da76cf42e9e2011d043c887e256bfaaccdb636fcb491998de87e01ca1d01b8"},"schema_version":"1.0"},"canonical_sha256":"ce9fd2e381596b65492b4dd4b4104f5b09e8d977107d54c17cf54798ac3b909d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:50:05.684015Z","signature_b64":"JCJcc1q840dXuI6o5XRBw5lMvz4GB+BojTyAX5FTKqWtI+cjO2GsURMZ4W7iJcX7GG/FSkQYe2XmFIuMjFhJAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ce9fd2e381596b65492b4dd4b4104f5b09e8d977107d54c17cf54798ac3b909d","last_reissued_at":"2026-07-05T02:50:05.683557Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:50:05.683557Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2005.08824","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":"2026-07-05T02:50:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wJL5PRqFn3mY5KHyZ57z+HT/KSBShD8USFC0nRHZSplHtOywcDXn1pUoYIx5WYjMX/xapmq+H2+HdTA+jY1oAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T12:20:45.388228Z"},"content_sha256":"e1ee1b730cf797f3aa998b6891f53de2b4829dcb7998b227dd3308193484b67c","schema_version":"1.0","event_id":"sha256:e1ee1b730cf797f3aa998b6891f53de2b4829dcb7998b227dd3308193484b67c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:Z2P5FY4BLFVWKSJLJXKLIECPLM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Searching for low mass dark matter via phonon creation in superfluid 4He","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","cond-mat.other","cond-mat.supr-con"],"primary_cat":"hep-ph","authors_text":"C. J. Pethick, D. H. Beck, Gordon Baym, Jeffrey P. Filippini, Jessie Shelton","submitted_at":"2020-05-18T15:56:33Z","abstract_excerpt":"We consider the scattering of dark matter particles from superfluid liquid $^4$He, which has been proposed as a target for their direct detection. Focusing on dark matter masses below ~1 MeV, we demonstrate from sum-rule arguments the importance of the production of single phonons with energies $\\omega \\lesssim 1$ meV. We show further that the anomalous dispersion of phonons in liquid $^4$He at low pressures [i.e., $d^2\\omega(q)/dq^2>0$, where $q$ and $\\omega(q)$ are the phonon momentum and energy] has the important consequence that a single phonon will decay over a relatively short distance i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.08824","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2005.08824/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T02:50:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TW/YnpvG0LOJYFYe0+hKCsXs9eQkHEwGJHVKXCwvD+/QsyVS+6pVDv+gP5DcooC9FlJDz84SJaE/Hm8L0rQQAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T12:20:45.388605Z"},"content_sha256":"cea7c46d4473bc02a31bbd6024431dcc78d2ecdfed1a2cf46a469a8638befbf0","schema_version":"1.0","event_id":"sha256:cea7c46d4473bc02a31bbd6024431dcc78d2ecdfed1a2cf46a469a8638befbf0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z2P5FY4BLFVWKSJLJXKLIECPLM/bundle.json","state_url":"https://pith.science/pith/Z2P5FY4BLFVWKSJLJXKLIECPLM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z2P5FY4BLFVWKSJLJXKLIECPLM/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":"2026-08-13T12:20:45Z","links":{"resolver":"https://pith.science/pith/Z2P5FY4BLFVWKSJLJXKLIECPLM","bundle":"https://pith.science/pith/Z2P5FY4BLFVWKSJLJXKLIECPLM/bundle.json","state":"https://pith.science/pith/Z2P5FY4BLFVWKSJLJXKLIECPLM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z2P5FY4BLFVWKSJLJXKLIECPLM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:Z2P5FY4BLFVWKSJLJXKLIECPLM","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":"22da76cf42e9e2011d043c887e256bfaaccdb636fcb491998de87e01ca1d01b8","cross_cats_sorted":["astro-ph.CO","cond-mat.other","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-05-18T15:56:33Z","title_canon_sha256":"f5bf300a88318084f42634eb1a9c1f9adc372da3e578585cdf401c9916820b22"},"schema_version":"1.0","source":{"id":"2005.08824","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.08824","created_at":"2026-07-05T02:50:05Z"},{"alias_kind":"arxiv_version","alias_value":"2005.08824v3","created_at":"2026-07-05T02:50:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.08824","created_at":"2026-07-05T02:50:05Z"},{"alias_kind":"pith_short_12","alias_value":"Z2P5FY4BLFVW","created_at":"2026-07-05T02:50:05Z"},{"alias_kind":"pith_short_16","alias_value":"Z2P5FY4BLFVWKSJL","created_at":"2026-07-05T02:50:05Z"},{"alias_kind":"pith_short_8","alias_value":"Z2P5FY4B","created_at":"2026-07-05T02:50:05Z"}],"graph_snapshots":[{"event_id":"sha256:cea7c46d4473bc02a31bbd6024431dcc78d2ecdfed1a2cf46a469a8638befbf0","target":"graph","created_at":"2026-07-05T02:50:05Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2005.08824/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We consider the scattering of dark matter particles from superfluid liquid $^4$He, which has been proposed as a target for their direct detection. Focusing on dark matter masses below ~1 MeV, we demonstrate from sum-rule arguments the importance of the production of single phonons with energies $\\omega \\lesssim 1$ meV. We show further that the anomalous dispersion of phonons in liquid $^4$He at low pressures [i.e., $d^2\\omega(q)/dq^2>0$, where $q$ and $\\omega(q)$ are the phonon momentum and energy] has the important consequence that a single phonon will decay over a relatively short distance i","authors_text":"C. J. Pethick, D. H. Beck, Gordon Baym, Jeffrey P. Filippini, Jessie Shelton","cross_cats":["astro-ph.CO","cond-mat.other","cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-05-18T15:56:33Z","title":"Searching for low mass dark matter via phonon creation in superfluid 4He"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.08824","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:e1ee1b730cf797f3aa998b6891f53de2b4829dcb7998b227dd3308193484b67c","target":"record","created_at":"2026-07-05T02:50:05Z","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":"22da76cf42e9e2011d043c887e256bfaaccdb636fcb491998de87e01ca1d01b8","cross_cats_sorted":["astro-ph.CO","cond-mat.other","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-05-18T15:56:33Z","title_canon_sha256":"f5bf300a88318084f42634eb1a9c1f9adc372da3e578585cdf401c9916820b22"},"schema_version":"1.0","source":{"id":"2005.08824","kind":"arxiv","version":3}},"canonical_sha256":"ce9fd2e381596b65492b4dd4b4104f5b09e8d977107d54c17cf54798ac3b909d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ce9fd2e381596b65492b4dd4b4104f5b09e8d977107d54c17cf54798ac3b909d","first_computed_at":"2026-07-05T02:50:05.683557Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:50:05.683557Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JCJcc1q840dXuI6o5XRBw5lMvz4GB+BojTyAX5FTKqWtI+cjO2GsURMZ4W7iJcX7GG/FSkQYe2XmFIuMjFhJAA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:50:05.684015Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.08824","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e1ee1b730cf797f3aa998b6891f53de2b4829dcb7998b227dd3308193484b67c","sha256:cea7c46d4473bc02a31bbd6024431dcc78d2ecdfed1a2cf46a469a8638befbf0"],"state_sha256":"74a9c91dc216dee2ab017e875d7e2b054eb275f439670b2f5ede3c2f329d5ce1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VsWd9TEAqEb0EQln1UtPbOmPJIm1QWAZ5t9E78KA6hqeTa3gekOb2BLR+pWKnOFOYKdxQtV9NlmDI8ORtxn2DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T12:20:45.391360Z","bundle_sha256":"1c6e9dab74c918430194337b1e17aa6b82ac68b2a0e6409f4a31bb1818dfddb2"}}