{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:TF32XBQEAYKAQRTK4ARUSJAAXS","short_pith_number":"pith:TF32XBQE","canonical_record":{"source":{"id":"2312.13348","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-12-20T19:00:01Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"9dd5c4f079fc432c602b3dab54de69b841937b5e512b65d3a2a57bfe4ea9133c","abstract_canon_sha256":"96fb6174352853c677faf1ecad1462b68b51b475c3eb48ba996d265220b81ec2"},"schema_version":"1.0"},"canonical_sha256":"9977ab8604061408466ae023492400bca4f33cd9bd78b6f94ba31752e985c52a","source":{"kind":"arxiv","id":"2312.13348","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2312.13348","created_at":"2026-07-05T08:30:07Z"},{"alias_kind":"arxiv_version","alias_value":"2312.13348v2","created_at":"2026-07-05T08:30:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2312.13348","created_at":"2026-07-05T08:30:07Z"},{"alias_kind":"pith_short_12","alias_value":"TF32XBQEAYKA","created_at":"2026-07-05T08:30:07Z"},{"alias_kind":"pith_short_16","alias_value":"TF32XBQEAYKAQRTK","created_at":"2026-07-05T08:30:07Z"},{"alias_kind":"pith_short_8","alias_value":"TF32XBQE","created_at":"2026-07-05T08:30:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:TF32XBQEAYKAQRTK4ARUSJAAXS","target":"record","payload":{"canonical_record":{"source":{"id":"2312.13348","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-12-20T19:00:01Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"9dd5c4f079fc432c602b3dab54de69b841937b5e512b65d3a2a57bfe4ea9133c","abstract_canon_sha256":"96fb6174352853c677faf1ecad1462b68b51b475c3eb48ba996d265220b81ec2"},"schema_version":"1.0"},"canonical_sha256":"9977ab8604061408466ae023492400bca4f33cd9bd78b6f94ba31752e985c52a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:30:07.150124Z","signature_b64":"ra54MSJe+o8eo7/gOfUU+W1fZf4HDWveZGZAcp6W7OtMIUO2rjq+dqvj5t+8yyPqDGJhbVkdwFhI2aNugv/EAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9977ab8604061408466ae023492400bca4f33cd9bd78b6f94ba31752e985c52a","last_reissued_at":"2026-07-05T08:30:07.149645Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:30:07.149645Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2312.13348","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":"2026-07-05T08:30:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"alVgoVOyANAQXSJRhRr6CwDIL6S1n48fTdS+lLhrti3Xvon54voT5z9AkBGHMS4lMQn+VuvVpUgkw6suhgWJDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T05:56:47.135271Z"},"content_sha256":"c260d60f8af45f3f88841f7a6bf67b0745e56c1940b81fd6e3bce6839079c1ca","schema_version":"1.0","event_id":"sha256:c260d60f8af45f3f88841f7a6bf67b0745e56c1940b81fd6e3bce6839079c1ca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:TF32XBQEAYKAQRTK4ARUSJAAXS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Charge-4$e$ Superconductivity in a Hubbard model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"cond-mat.str-el","authors_text":"Mark H. Fischer, Martina O. Soldini, Titus Neupert","submitted_at":"2023-12-20T19:00:01Z","abstract_excerpt":"A phase of matter in which fermion quartets form a superconducting condensate, rather than the paradigmatic Cooper pairs, is a recurrent subject of experimental and theoretical studies. However, a comprehensive microscopic understanding of charge-4$e$ superconductivity as a quantum phase is lacking. Here, we propose and study a two-orbital tight-binding model with attractive Hubbard-type interactions. Such a model naturally provides the Bose-Einstein condensate as a limit for electron quartets and supports charge-4$e$ superconductivity, as we show by mapping it to a spin-1/2 chain in this pert"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2312.13348","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/2312.13348/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":"2026-07-05T08:30:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MblP0E9MY+nZZ5A3xqkgHa34DQ55zkNlZJJ4mNRNnmRXA2qbAuKJQlTL7USDt6XKFmFjyw5YtRkqI9cq4r2VCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T05:56:47.135792Z"},"content_sha256":"6a243d6f531095d9d7e960ea68abb7ca230cb0c49d185a6305acb32dcb987e2b","schema_version":"1.0","event_id":"sha256:6a243d6f531095d9d7e960ea68abb7ca230cb0c49d185a6305acb32dcb987e2b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TF32XBQEAYKAQRTK4ARUSJAAXS/bundle.json","state_url":"https://pith.science/pith/TF32XBQEAYKAQRTK4ARUSJAAXS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TF32XBQEAYKAQRTK4ARUSJAAXS/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":"2026-08-22T05:56:47Z","links":{"resolver":"https://pith.science/pith/TF32XBQEAYKAQRTK4ARUSJAAXS","bundle":"https://pith.science/pith/TF32XBQEAYKAQRTK4ARUSJAAXS/bundle.json","state":"https://pith.science/pith/TF32XBQEAYKAQRTK4ARUSJAAXS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TF32XBQEAYKAQRTK4ARUSJAAXS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:TF32XBQEAYKAQRTK4ARUSJAAXS","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":"96fb6174352853c677faf1ecad1462b68b51b475c3eb48ba996d265220b81ec2","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-12-20T19:00:01Z","title_canon_sha256":"9dd5c4f079fc432c602b3dab54de69b841937b5e512b65d3a2a57bfe4ea9133c"},"schema_version":"1.0","source":{"id":"2312.13348","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2312.13348","created_at":"2026-07-05T08:30:07Z"},{"alias_kind":"arxiv_version","alias_value":"2312.13348v2","created_at":"2026-07-05T08:30:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2312.13348","created_at":"2026-07-05T08:30:07Z"},{"alias_kind":"pith_short_12","alias_value":"TF32XBQEAYKA","created_at":"2026-07-05T08:30:07Z"},{"alias_kind":"pith_short_16","alias_value":"TF32XBQEAYKAQRTK","created_at":"2026-07-05T08:30:07Z"},{"alias_kind":"pith_short_8","alias_value":"TF32XBQE","created_at":"2026-07-05T08:30:07Z"}],"graph_snapshots":[{"event_id":"sha256:6a243d6f531095d9d7e960ea68abb7ca230cb0c49d185a6305acb32dcb987e2b","target":"graph","created_at":"2026-07-05T08:30:07Z","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/2312.13348/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A phase of matter in which fermion quartets form a superconducting condensate, rather than the paradigmatic Cooper pairs, is a recurrent subject of experimental and theoretical studies. However, a comprehensive microscopic understanding of charge-4$e$ superconductivity as a quantum phase is lacking. Here, we propose and study a two-orbital tight-binding model with attractive Hubbard-type interactions. Such a model naturally provides the Bose-Einstein condensate as a limit for electron quartets and supports charge-4$e$ superconductivity, as we show by mapping it to a spin-1/2 chain in this pert","authors_text":"Mark H. Fischer, Martina O. Soldini, Titus Neupert","cross_cats":["cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-12-20T19:00:01Z","title":"Charge-4$e$ Superconductivity in a Hubbard model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2312.13348","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:c260d60f8af45f3f88841f7a6bf67b0745e56c1940b81fd6e3bce6839079c1ca","target":"record","created_at":"2026-07-05T08:30:07Z","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":"96fb6174352853c677faf1ecad1462b68b51b475c3eb48ba996d265220b81ec2","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2023-12-20T19:00:01Z","title_canon_sha256":"9dd5c4f079fc432c602b3dab54de69b841937b5e512b65d3a2a57bfe4ea9133c"},"schema_version":"1.0","source":{"id":"2312.13348","kind":"arxiv","version":2}},"canonical_sha256":"9977ab8604061408466ae023492400bca4f33cd9bd78b6f94ba31752e985c52a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9977ab8604061408466ae023492400bca4f33cd9bd78b6f94ba31752e985c52a","first_computed_at":"2026-07-05T08:30:07.149645Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:30:07.149645Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ra54MSJe+o8eo7/gOfUU+W1fZf4HDWveZGZAcp6W7OtMIUO2rjq+dqvj5t+8yyPqDGJhbVkdwFhI2aNugv/EAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T08:30:07.150124Z","signed_message":"canonical_sha256_bytes"},"source_id":"2312.13348","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c260d60f8af45f3f88841f7a6bf67b0745e56c1940b81fd6e3bce6839079c1ca","sha256:6a243d6f531095d9d7e960ea68abb7ca230cb0c49d185a6305acb32dcb987e2b"],"state_sha256":"e450f3b695432c1890ab3db7b7226ddd704855a2a9ee4957f5d7c1ffe57eddb9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ks5nD8VvhxSeZRR5wLpzBCEkFzLTJr5LBK/Jz+YpIeceamZvLtjRdHEBYBl465y+BQE/c9Qkq+qU71i7FyHUCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T05:56:47.140559Z","bundle_sha256":"c55bfd3a0f0fc18310e55f0dcd3990cd7d65fc105830cb6c74676069d14761b4"}}