{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:TNY6LMB5VDMNFAHDZ7CWOXOGNR","short_pith_number":"pith:TNY6LMB5","canonical_record":{"source":{"id":"2012.05916","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-12-10T19:00:01Z","cross_cats_sorted":["cond-mat.str-el","cond-mat.supr-con"],"title_canon_sha256":"866ba240b78ae01ea856dbe86fccb30a687887b1d2495c6414330f54c8efd9bf","abstract_canon_sha256":"2e1ebf39b1f47ab49b2743be16c5d21741ef7c672c96beb721cc33b0f6fc923d"},"schema_version":"1.0"},"canonical_sha256":"9b71e5b03da8d8d280e3cfc5675dc66c764eed3924df629f46108cb806f0b28d","source":{"kind":"arxiv","id":"2012.05916","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.05916","created_at":"2026-07-05T07:29:59Z"},{"alias_kind":"arxiv_version","alias_value":"2012.05916v1","created_at":"2026-07-05T07:29:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.05916","created_at":"2026-07-05T07:29:59Z"},{"alias_kind":"pith_short_12","alias_value":"TNY6LMB5VDMN","created_at":"2026-07-05T07:29:59Z"},{"alias_kind":"pith_short_16","alias_value":"TNY6LMB5VDMNFAHD","created_at":"2026-07-05T07:29:59Z"},{"alias_kind":"pith_short_8","alias_value":"TNY6LMB5","created_at":"2026-07-05T07:29:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:TNY6LMB5VDMNFAHDZ7CWOXOGNR","target":"record","payload":{"canonical_record":{"source":{"id":"2012.05916","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-12-10T19:00:01Z","cross_cats_sorted":["cond-mat.str-el","cond-mat.supr-con"],"title_canon_sha256":"866ba240b78ae01ea856dbe86fccb30a687887b1d2495c6414330f54c8efd9bf","abstract_canon_sha256":"2e1ebf39b1f47ab49b2743be16c5d21741ef7c672c96beb721cc33b0f6fc923d"},"schema_version":"1.0"},"canonical_sha256":"9b71e5b03da8d8d280e3cfc5675dc66c764eed3924df629f46108cb806f0b28d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:29:59.485380Z","signature_b64":"T00z+mkDkuRqwPBpcRAu/cjflJ1Z5ljSkKq4MtPr8PeIDVsroIQeCFlcArwlGkdikyQ34Pj62pxmXQFzHH7TCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9b71e5b03da8d8d280e3cfc5675dc66c764eed3924df629f46108cb806f0b28d","last_reissued_at":"2026-07-05T07:29:59.484968Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:29:59.484968Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2012.05916","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:29:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IOMeo8UraV1BSO1/pakykUp4wGYBQI0tim3MY9wlOyWPtmdIZqhkxBc3dShQtFee6vSzjmV7+DIKY1lbUFzrCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:49:33.191273Z"},"content_sha256":"233a8447c6c304be27c2da2c21f069d53806448cf71496021bb3d82bd13be663","schema_version":"1.0","event_id":"sha256:233a8447c6c304be27c2da2c21f069d53806448cf71496021bb3d82bd13be663"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:TNY6LMB5VDMNFAHDZ7CWOXOGNR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Crossover between Strongly-coupled and Weakly-coupled Exciton Superfluids","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el","cond-mat.supr-con"],"primary_cat":"cond-mat.mes-hall","authors_text":"Bertrand I. Halperin, Cory R. Dean, James Hone, J.I.A. Li, Kenji Watanabe, Philip Kim, Takashi Taniguchi, Xiaomeng Liu","submitted_at":"2020-12-10T19:00:01Z","abstract_excerpt":"In fermionic systems, superconductivity and superfluidity are enabled through the condensation of fermion pairs. The nature of this condensate can be tuned by varying the pairing strength, with weak coupling yielding a BCS-like condensate and strong coupling resulting in a BEC-like process. However, demonstration of this cross-over has remained elusive in electronic systems. Here we study graphene double-layers separated by an atomically thin insulator. Under applied magnetic field, electrons and holes couple across the barrier to form bound magneto-excitons whose pairing strength can be conti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.05916","kind":"arxiv","version":1},"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/2012.05916/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":"2026-07-05T07:29:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5vIMUlief5/D6jLf7Hfd/PVXYip5feHGHgCdMxaB0lS4djo7sbcRjiD42TMoyHTMJUXA0EiXrG9r07LSNl2kAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:49:33.192213Z"},"content_sha256":"96c7cb7d4b43282b71ad61c9e5e49d0260640c34a2b4aecab990008c4ff6000c","schema_version":"1.0","event_id":"sha256:96c7cb7d4b43282b71ad61c9e5e49d0260640c34a2b4aecab990008c4ff6000c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TNY6LMB5VDMNFAHDZ7CWOXOGNR/bundle.json","state_url":"https://pith.science/pith/TNY6LMB5VDMNFAHDZ7CWOXOGNR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TNY6LMB5VDMNFAHDZ7CWOXOGNR/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":"2026-08-07T16:49:33Z","links":{"resolver":"https://pith.science/pith/TNY6LMB5VDMNFAHDZ7CWOXOGNR","bundle":"https://pith.science/pith/TNY6LMB5VDMNFAHDZ7CWOXOGNR/bundle.json","state":"https://pith.science/pith/TNY6LMB5VDMNFAHDZ7CWOXOGNR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TNY6LMB5VDMNFAHDZ7CWOXOGNR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:TNY6LMB5VDMNFAHDZ7CWOXOGNR","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":"2e1ebf39b1f47ab49b2743be16c5d21741ef7c672c96beb721cc33b0f6fc923d","cross_cats_sorted":["cond-mat.str-el","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-12-10T19:00:01Z","title_canon_sha256":"866ba240b78ae01ea856dbe86fccb30a687887b1d2495c6414330f54c8efd9bf"},"schema_version":"1.0","source":{"id":"2012.05916","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.05916","created_at":"2026-07-05T07:29:59Z"},{"alias_kind":"arxiv_version","alias_value":"2012.05916v1","created_at":"2026-07-05T07:29:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.05916","created_at":"2026-07-05T07:29:59Z"},{"alias_kind":"pith_short_12","alias_value":"TNY6LMB5VDMN","created_at":"2026-07-05T07:29:59Z"},{"alias_kind":"pith_short_16","alias_value":"TNY6LMB5VDMNFAHD","created_at":"2026-07-05T07:29:59Z"},{"alias_kind":"pith_short_8","alias_value":"TNY6LMB5","created_at":"2026-07-05T07:29:59Z"}],"graph_snapshots":[{"event_id":"sha256:96c7cb7d4b43282b71ad61c9e5e49d0260640c34a2b4aecab990008c4ff6000c","target":"graph","created_at":"2026-07-05T07:29:59Z","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/2012.05916/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In fermionic systems, superconductivity and superfluidity are enabled through the condensation of fermion pairs. The nature of this condensate can be tuned by varying the pairing strength, with weak coupling yielding a BCS-like condensate and strong coupling resulting in a BEC-like process. However, demonstration of this cross-over has remained elusive in electronic systems. Here we study graphene double-layers separated by an atomically thin insulator. Under applied magnetic field, electrons and holes couple across the barrier to form bound magneto-excitons whose pairing strength can be conti","authors_text":"Bertrand I. Halperin, Cory R. Dean, James Hone, J.I.A. Li, Kenji Watanabe, Philip Kim, Takashi Taniguchi, Xiaomeng Liu","cross_cats":["cond-mat.str-el","cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-12-10T19:00:01Z","title":"Crossover between Strongly-coupled and Weakly-coupled Exciton Superfluids"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.05916","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":"sha256:233a8447c6c304be27c2da2c21f069d53806448cf71496021bb3d82bd13be663","target":"record","created_at":"2026-07-05T07:29:59Z","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":"2e1ebf39b1f47ab49b2743be16c5d21741ef7c672c96beb721cc33b0f6fc923d","cross_cats_sorted":["cond-mat.str-el","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-12-10T19:00:01Z","title_canon_sha256":"866ba240b78ae01ea856dbe86fccb30a687887b1d2495c6414330f54c8efd9bf"},"schema_version":"1.0","source":{"id":"2012.05916","kind":"arxiv","version":1}},"canonical_sha256":"9b71e5b03da8d8d280e3cfc5675dc66c764eed3924df629f46108cb806f0b28d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9b71e5b03da8d8d280e3cfc5675dc66c764eed3924df629f46108cb806f0b28d","first_computed_at":"2026-07-05T07:29:59.484968Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:29:59.484968Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"T00z+mkDkuRqwPBpcRAu/cjflJ1Z5ljSkKq4MtPr8PeIDVsroIQeCFlcArwlGkdikyQ34Pj62pxmXQFzHH7TCw==","signature_status":"signed_v1","signed_at":"2026-07-05T07:29:59.485380Z","signed_message":"canonical_sha256_bytes"},"source_id":"2012.05916","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:233a8447c6c304be27c2da2c21f069d53806448cf71496021bb3d82bd13be663","sha256:96c7cb7d4b43282b71ad61c9e5e49d0260640c34a2b4aecab990008c4ff6000c"],"state_sha256":"b2739c592a57b368f51f712be2a8b5eac97aeaa59b2eaf9e55811814a08e90f0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"doy9vtkGc2ude2+BZoWTNiKBp7osnVtBUe2Eqxbu4a7HPyhFbJfvr0KrW03HZGJxXI4FTcNJdS4GLND+1NisDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T16:49:33.205481Z","bundle_sha256":"effbcc8a729ae8f3e7c17a7576f93dec6be73e5583d1aa6c85cfeb9e01411931"}}