{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:FQ3W7PXRML75SYG6Q2AXJ6SEFJ","short_pith_number":"pith:FQ3W7PXR","canonical_record":{"source":{"id":"2101.03645","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2021-01-11T00:07:08Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"eac043107f6d6d14bbe968398060a8eb1b827d8c6aa8a648b6a45dd6ced36547","abstract_canon_sha256":"03a08dbcbc001bf9d12f2f69aa7042f02e14e4d4abfccf9b1b8b4c53d7349b49"},"schema_version":"1.0"},"canonical_sha256":"2c376fbef162ffd960de868174fa442a404e8ce9cc5347042c3de0a7386c57e1","source":{"kind":"arxiv","id":"2101.03645","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.03645","created_at":"2026-07-05T02:57:51Z"},{"alias_kind":"arxiv_version","alias_value":"2101.03645v2","created_at":"2026-07-05T02:57:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.03645","created_at":"2026-07-05T02:57:51Z"},{"alias_kind":"pith_short_12","alias_value":"FQ3W7PXRML75","created_at":"2026-07-05T02:57:51Z"},{"alias_kind":"pith_short_16","alias_value":"FQ3W7PXRML75SYG6","created_at":"2026-07-05T02:57:51Z"},{"alias_kind":"pith_short_8","alias_value":"FQ3W7PXR","created_at":"2026-07-05T02:57:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:FQ3W7PXRML75SYG6Q2AXJ6SEFJ","target":"record","payload":{"canonical_record":{"source":{"id":"2101.03645","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2021-01-11T00:07:08Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"eac043107f6d6d14bbe968398060a8eb1b827d8c6aa8a648b6a45dd6ced36547","abstract_canon_sha256":"03a08dbcbc001bf9d12f2f69aa7042f02e14e4d4abfccf9b1b8b4c53d7349b49"},"schema_version":"1.0"},"canonical_sha256":"2c376fbef162ffd960de868174fa442a404e8ce9cc5347042c3de0a7386c57e1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:57:51.470161Z","signature_b64":"Go3c6FzkraqcWaWuVXNhhRfxlvErYAxdwQD1D5i8VOm3N4BVhfiUfsAzN6SwmdMkHJ6JE7fBiVb1+/6PJptbCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2c376fbef162ffd960de868174fa442a404e8ce9cc5347042c3de0a7386c57e1","last_reissued_at":"2026-07-05T02:57:51.469676Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:57:51.469676Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2101.03645","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:57:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KND/97QAWzQAV0DaU+Lw9RXAvJUx+aA/rTwiB73cmVUCa26wKWBFaJKupJcHhCC2uzg9NkArkCWRRSilkOpJAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T10:58:22.499903Z"},"content_sha256":"7c98d816e99c57da4deb7d4a53fd37be471c1b2cccf1eb325c66aaa419c7ea59","schema_version":"1.0","event_id":"sha256:7c98d816e99c57da4deb7d4a53fd37be471c1b2cccf1eb325c66aaa419c7ea59"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:FQ3W7PXRML75SYG6Q2AXJ6SEFJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Shear-thinning in Polymer Melts -- Molecular Origins and Hybrid Multiscale Simulations","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"cond-mat.soft","authors_text":"Florian Kummer, Friederike Schmid, Leonid Yelash, Maria Luk\\'a\\v{c}ov\\'a-Medvid'ov\\'a, Martin Oberlack, Peter Virnau, Ranajay Datta","submitted_at":"2021-01-11T00:07:08Z","abstract_excerpt":"We investigate the molecular origin of shear-thinning in melts of flexible, semiflexible and rigid oligomers with coarse-grained simulations of a sheared melt. Alignment, stretching and tumbling modes or suppression of the latter all contribute to understanding how macroscopic flow properties emerge from the molecular level. By performing simulations of single chains in a shear flow, we identify which of these phenomena are of collective nature and arise through interchain interactions and which are already present in dilute systems. Building upon these microscopic simulations we identify by m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.03645","kind":"arxiv","version":2},"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/2101.03645/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":"2026-07-05T02:57:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oPUdctKjGuk3zr31QSHIGTQNa660+WlGlnX965OxUcCycCYMmMhd3a7daIfEUsSEbpMiU7qLH82VwTMp+NnXBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T10:58:22.501145Z"},"content_sha256":"ed0b78b361eed902751e0983fc678ca3c594897c4d183c93b0721afd2c44e527","schema_version":"1.0","event_id":"sha256:ed0b78b361eed902751e0983fc678ca3c594897c4d183c93b0721afd2c44e527"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FQ3W7PXRML75SYG6Q2AXJ6SEFJ/bundle.json","state_url":"https://pith.science/pith/FQ3W7PXRML75SYG6Q2AXJ6SEFJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FQ3W7PXRML75SYG6Q2AXJ6SEFJ/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":"2026-08-05T10:58:22Z","links":{"resolver":"https://pith.science/pith/FQ3W7PXRML75SYG6Q2AXJ6SEFJ","bundle":"https://pith.science/pith/FQ3W7PXRML75SYG6Q2AXJ6SEFJ/bundle.json","state":"https://pith.science/pith/FQ3W7PXRML75SYG6Q2AXJ6SEFJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FQ3W7PXRML75SYG6Q2AXJ6SEFJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:FQ3W7PXRML75SYG6Q2AXJ6SEFJ","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":"03a08dbcbc001bf9d12f2f69aa7042f02e14e4d4abfccf9b1b8b4c53d7349b49","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2021-01-11T00:07:08Z","title_canon_sha256":"eac043107f6d6d14bbe968398060a8eb1b827d8c6aa8a648b6a45dd6ced36547"},"schema_version":"1.0","source":{"id":"2101.03645","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.03645","created_at":"2026-07-05T02:57:51Z"},{"alias_kind":"arxiv_version","alias_value":"2101.03645v2","created_at":"2026-07-05T02:57:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.03645","created_at":"2026-07-05T02:57:51Z"},{"alias_kind":"pith_short_12","alias_value":"FQ3W7PXRML75","created_at":"2026-07-05T02:57:51Z"},{"alias_kind":"pith_short_16","alias_value":"FQ3W7PXRML75SYG6","created_at":"2026-07-05T02:57:51Z"},{"alias_kind":"pith_short_8","alias_value":"FQ3W7PXR","created_at":"2026-07-05T02:57:51Z"}],"graph_snapshots":[{"event_id":"sha256:ed0b78b361eed902751e0983fc678ca3c594897c4d183c93b0721afd2c44e527","target":"graph","created_at":"2026-07-05T02:57:51Z","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/2101.03645/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate the molecular origin of shear-thinning in melts of flexible, semiflexible and rigid oligomers with coarse-grained simulations of a sheared melt. Alignment, stretching and tumbling modes or suppression of the latter all contribute to understanding how macroscopic flow properties emerge from the molecular level. By performing simulations of single chains in a shear flow, we identify which of these phenomena are of collective nature and arise through interchain interactions and which are already present in dilute systems. Building upon these microscopic simulations we identify by m","authors_text":"Florian Kummer, Friederike Schmid, Leonid Yelash, Maria Luk\\'a\\v{c}ov\\'a-Medvid'ov\\'a, Martin Oberlack, Peter Virnau, Ranajay Datta","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2021-01-11T00:07:08Z","title":"Shear-thinning in Polymer Melts -- Molecular Origins and Hybrid Multiscale Simulations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.03645","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":"sha256:7c98d816e99c57da4deb7d4a53fd37be471c1b2cccf1eb325c66aaa419c7ea59","target":"record","created_at":"2026-07-05T02:57:51Z","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":"03a08dbcbc001bf9d12f2f69aa7042f02e14e4d4abfccf9b1b8b4c53d7349b49","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2021-01-11T00:07:08Z","title_canon_sha256":"eac043107f6d6d14bbe968398060a8eb1b827d8c6aa8a648b6a45dd6ced36547"},"schema_version":"1.0","source":{"id":"2101.03645","kind":"arxiv","version":2}},"canonical_sha256":"2c376fbef162ffd960de868174fa442a404e8ce9cc5347042c3de0a7386c57e1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2c376fbef162ffd960de868174fa442a404e8ce9cc5347042c3de0a7386c57e1","first_computed_at":"2026-07-05T02:57:51.469676Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:57:51.469676Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Go3c6FzkraqcWaWuVXNhhRfxlvErYAxdwQD1D5i8VOm3N4BVhfiUfsAzN6SwmdMkHJ6JE7fBiVb1+/6PJptbCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:57:51.470161Z","signed_message":"canonical_sha256_bytes"},"source_id":"2101.03645","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7c98d816e99c57da4deb7d4a53fd37be471c1b2cccf1eb325c66aaa419c7ea59","sha256:ed0b78b361eed902751e0983fc678ca3c594897c4d183c93b0721afd2c44e527"],"state_sha256":"7e0df7d15321af332cbf69401a56b9b4318e77b6669eab2e54e1a548ec18268d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tMer7te66oESJ8y43iLntlhKGG72Uv6AbeNHlTYTs3WPD3exwGYWAw8FVOrfP8wF4yFtVCT+Ub7EWSC+W1GRBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T10:58:22.507682Z","bundle_sha256":"7948c63f820dd48b60d3d42b840fd390c82138aedd83db02460ae7a6ab6e1d50"}}