{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:UVKGERZUGQCUSEZ6BWQO4EM35M","short_pith_number":"pith:UVKGERZU","canonical_record":{"source":{"id":"0704.1663","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2007-04-12T20:26:08Z","cross_cats_sorted":["cond-mat.soft"],"title_canon_sha256":"aeac378eb2c747386057959a738f2d655b0215a60c91a0dee08fb5758dae4022","abstract_canon_sha256":"3b262b9511fbb18f02606bcb32d65e18b87ebb3b5be576e4ef4bf73fd651f032"},"schema_version":"1.0"},"canonical_sha256":"a554624734340549133e0da0ee119beb140c5851eeb1e779b749efa76a156258","source":{"kind":"arxiv","id":"0704.1663","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0704.1663","created_at":"2026-05-18T04:09:24Z"},{"alias_kind":"arxiv_version","alias_value":"0704.1663v2","created_at":"2026-05-18T04:09:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0704.1663","created_at":"2026-05-18T04:09:24Z"},{"alias_kind":"pith_short_12","alias_value":"UVKGERZUGQCU","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"UVKGERZUGQCUSEZ6","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"UVKGERZU","created_at":"2026-05-18T12:25:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:UVKGERZUGQCUSEZ6BWQO4EM35M","target":"record","payload":{"canonical_record":{"source":{"id":"0704.1663","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2007-04-12T20:26:08Z","cross_cats_sorted":["cond-mat.soft"],"title_canon_sha256":"aeac378eb2c747386057959a738f2d655b0215a60c91a0dee08fb5758dae4022","abstract_canon_sha256":"3b262b9511fbb18f02606bcb32d65e18b87ebb3b5be576e4ef4bf73fd651f032"},"schema_version":"1.0"},"canonical_sha256":"a554624734340549133e0da0ee119beb140c5851eeb1e779b749efa76a156258","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:09:24.157602Z","signature_b64":"aLBH8WMRS/uM32HvjiqAdW+50OLdMaTcojI5ZsWYCWyHll/Kwd8BkXhZxxpavAby7Vw+V7owGBHStonfeP98BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a554624734340549133e0da0ee119beb140c5851eeb1e779b749efa76a156258","last_reissued_at":"2026-05-18T04:09:24.156978Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:09:24.156978Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0704.1663","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":"2026-05-18T04:09:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"awAZxeUMToO+gBMZ1WPWPDY1HzuF8fx4Qyc8S9JPMiNjbd+F/fZHOBnMz5r5zd36eKq+y1ZeijrI3cqQXlaODA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T20:38:49.247622Z"},"content_sha256":"fc2943f2834d4c32c278538b3a7efd6d0bad527b05818cbd36098c8e689819c5","schema_version":"1.0","event_id":"sha256:fc2943f2834d4c32c278538b3a7efd6d0bad527b05818cbd36098c8e689819c5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:UVKGERZUGQCUSEZ6BWQO4EM35M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dynamics of single polymers under extreme confinement","license":"","headline":"","cross_cats":["cond-mat.soft"],"primary_cat":"cond-mat.stat-mech","authors_text":"Armin Rahmani, Claudio Castelnovo, Claudio Chamon, Jeremy Schmit","submitted_at":"2007-04-12T20:26:08Z","abstract_excerpt":"We study the dynamics of a single chain polymer confined to a two dimensional cell. We introduce a kinetically constrained lattice gas model that preserves the connectivity of the chain, and we use this kinetically constrained model to study the dynamics of the polymer at varying densities through Monte Carlo simulations. Even at densities close to the fully-packed configuration, we find that the monomers comprising the chain manage to diffuse around the box with a root mean square displacement of the order of the box dimensions over time scales for which the overall geometry of the polymer is"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0704.1663","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":""},"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":"2026-05-18T04:09:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QiuCxDKcdFRL/4boi4c1nKWrXgvV3qkkrJi1hqaOTHDs12Af2qe89zVh4OV7K0hgXBb9OyxJ7vzhLit153j6AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T20:38:49.248246Z"},"content_sha256":"946bfe43d3053998eaa55c970aa2ef3778bf7595b7df3f260281fd0f9a458858","schema_version":"1.0","event_id":"sha256:946bfe43d3053998eaa55c970aa2ef3778bf7595b7df3f260281fd0f9a458858"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UVKGERZUGQCUSEZ6BWQO4EM35M/bundle.json","state_url":"https://pith.science/pith/UVKGERZUGQCUSEZ6BWQO4EM35M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UVKGERZUGQCUSEZ6BWQO4EM35M/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":"2026-06-05T20:38:49Z","links":{"resolver":"https://pith.science/pith/UVKGERZUGQCUSEZ6BWQO4EM35M","bundle":"https://pith.science/pith/UVKGERZUGQCUSEZ6BWQO4EM35M/bundle.json","state":"https://pith.science/pith/UVKGERZUGQCUSEZ6BWQO4EM35M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UVKGERZUGQCUSEZ6BWQO4EM35M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:UVKGERZUGQCUSEZ6BWQO4EM35M","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":"3b262b9511fbb18f02606bcb32d65e18b87ebb3b5be576e4ef4bf73fd651f032","cross_cats_sorted":["cond-mat.soft"],"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2007-04-12T20:26:08Z","title_canon_sha256":"aeac378eb2c747386057959a738f2d655b0215a60c91a0dee08fb5758dae4022"},"schema_version":"1.0","source":{"id":"0704.1663","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0704.1663","created_at":"2026-05-18T04:09:24Z"},{"alias_kind":"arxiv_version","alias_value":"0704.1663v2","created_at":"2026-05-18T04:09:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0704.1663","created_at":"2026-05-18T04:09:24Z"},{"alias_kind":"pith_short_12","alias_value":"UVKGERZUGQCU","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"UVKGERZUGQCUSEZ6","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"UVKGERZU","created_at":"2026-05-18T12:25:56Z"}],"graph_snapshots":[{"event_id":"sha256:946bfe43d3053998eaa55c970aa2ef3778bf7595b7df3f260281fd0f9a458858","target":"graph","created_at":"2026-05-18T04:09:24Z","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 study the dynamics of a single chain polymer confined to a two dimensional cell. We introduce a kinetically constrained lattice gas model that preserves the connectivity of the chain, and we use this kinetically constrained model to study the dynamics of the polymer at varying densities through Monte Carlo simulations. Even at densities close to the fully-packed configuration, we find that the monomers comprising the chain manage to diffuse around the box with a root mean square displacement of the order of the box dimensions over time scales for which the overall geometry of the polymer is","authors_text":"Armin Rahmani, Claudio Castelnovo, Claudio Chamon, Jeremy Schmit","cross_cats":["cond-mat.soft"],"headline":"","license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2007-04-12T20:26:08Z","title":"Dynamics of single polymers under extreme confinement"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0704.1663","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:fc2943f2834d4c32c278538b3a7efd6d0bad527b05818cbd36098c8e689819c5","target":"record","created_at":"2026-05-18T04:09:24Z","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":"3b262b9511fbb18f02606bcb32d65e18b87ebb3b5be576e4ef4bf73fd651f032","cross_cats_sorted":["cond-mat.soft"],"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2007-04-12T20:26:08Z","title_canon_sha256":"aeac378eb2c747386057959a738f2d655b0215a60c91a0dee08fb5758dae4022"},"schema_version":"1.0","source":{"id":"0704.1663","kind":"arxiv","version":2}},"canonical_sha256":"a554624734340549133e0da0ee119beb140c5851eeb1e779b749efa76a156258","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a554624734340549133e0da0ee119beb140c5851eeb1e779b749efa76a156258","first_computed_at":"2026-05-18T04:09:24.156978Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:09:24.156978Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aLBH8WMRS/uM32HvjiqAdW+50OLdMaTcojI5ZsWYCWyHll/Kwd8BkXhZxxpavAby7Vw+V7owGBHStonfeP98BA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:09:24.157602Z","signed_message":"canonical_sha256_bytes"},"source_id":"0704.1663","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fc2943f2834d4c32c278538b3a7efd6d0bad527b05818cbd36098c8e689819c5","sha256:946bfe43d3053998eaa55c970aa2ef3778bf7595b7df3f260281fd0f9a458858"],"state_sha256":"ae505152e186b93ab80cde854e717d43f5d677f78e85925cb98a749511999129"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g9J7Y5O/hsAWiv/dZQNc5PRYYhlwpWuVO3ywHX1TaifXCtNRi1tBT+bTaP5oRY1EEcD78vk7v4zmHuPGsZSsAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T20:38:49.251259Z","bundle_sha256":"2e29f6373f6f0311cc5dd8629ff46ca9e2514fe843db89a4512ab8c3882e67d7"}}