{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:VXUAUYVVV4TM7LFGE2B2UQO62P","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":"a5d71c4c03b7e17bc994fdfc59f26d3a6754412ba57da0c26ca3d084c54cc0bf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2012-03-05T19:05:20Z","title_canon_sha256":"7c49eccc7b83e2debdfb716ab44eb0df5f6a2c64c940c76e1d12c48daad5c8a0"},"schema_version":"1.0","source":{"id":"1203.1009","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.1009","created_at":"2026-05-18T03:53:06Z"},{"alias_kind":"arxiv_version","alias_value":"1203.1009v1","created_at":"2026-05-18T03:53:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.1009","created_at":"2026-05-18T03:53:06Z"},{"alias_kind":"pith_short_12","alias_value":"VXUAUYVVV4TM","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"VXUAUYVVV4TM7LFG","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"VXUAUYVV","created_at":"2026-05-18T12:27:25Z"}],"graph_snapshots":[{"event_id":"sha256:697212de6d5949863fd1906fc3d3d2ee0386cbeb267d5e1655c0c8f3e96d8e3d","target":"graph","created_at":"2026-05-18T03:53:06Z","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":"The dynamics of a single impurity in an environment is a fundamental problem in many-body physics. In the solid state, a well-known case is an impurity coupled to a bosonic bath, for example lattice vibrations. Here the impurity together with its accompanying lattice distortion form a new entity, a polaron. This quasiparticle plays an important role in the spectral function of high-Tc superconductors as well as in colossal-magnetoresistance in manganites. For impurities in a fermionic bath, the attention so far has been mostly on heavy or immobile impurities which exhibit Anderson's orthogonal","authors_text":"Bernd Fr\\\"ohlich, Daniel Pertot, Enrico Vogt, Marco Koschorreck, Michael Feld, Michael K\\\"ohl","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2012-03-05T19:05:20Z","title":"Attractive and repulsive Fermi polarons in two dimensions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.1009","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":"sha256:421617bd7a62f503cd2f2a74d99d840e544848a187d2424a1b7e2687e61f4982","target":"record","created_at":"2026-05-18T03:53:06Z","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":"a5d71c4c03b7e17bc994fdfc59f26d3a6754412ba57da0c26ca3d084c54cc0bf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2012-03-05T19:05:20Z","title_canon_sha256":"7c49eccc7b83e2debdfb716ab44eb0df5f6a2c64c940c76e1d12c48daad5c8a0"},"schema_version":"1.0","source":{"id":"1203.1009","kind":"arxiv","version":1}},"canonical_sha256":"ade80a62b5af26cfaca62683aa41ded3f99a320eb00beda190db2e0862d978a0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ade80a62b5af26cfaca62683aa41ded3f99a320eb00beda190db2e0862d978a0","first_computed_at":"2026-05-18T03:53:06.717067Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:53:06.717067Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ta3k6cA61bJIu+MrbWRHPcvT+oiu1H9yQ9RS/r0LR5N5nO/rXwSs+O2ZbpdwnMUPcxBVIRLu0wgwNrK18jDtDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:53:06.717651Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.1009","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:421617bd7a62f503cd2f2a74d99d840e544848a187d2424a1b7e2687e61f4982","sha256:697212de6d5949863fd1906fc3d3d2ee0386cbeb267d5e1655c0c8f3e96d8e3d"],"state_sha256":"a0ed166dc858f3ac39bb03fecdf2d9b2eda0044ba977553e9facee8ac7c7aa6e"}