{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:PFRSOIF2J6LYVVM2HGEB2HMEHB","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":"10d196ec5b8f9dae71ac4f3c1ecb0393609a22bc2a289853d91fe4038fdafa94","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2026-07-17T04:28:58Z","title_canon_sha256":"ac07cafe7be4da292e7691337a5d8a58624d0023481a3e0e8fbc414ac7aa4388"},"schema_version":"1.0","source":{"id":"2607.15616","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.15616","created_at":"2026-07-20T01:19:00Z"},{"alias_kind":"arxiv_version","alias_value":"2607.15616v1","created_at":"2026-07-20T01:19:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.15616","created_at":"2026-07-20T01:19:00Z"},{"alias_kind":"pith_short_12","alias_value":"PFRSOIF2J6LY","created_at":"2026-07-20T01:19:00Z"},{"alias_kind":"pith_short_16","alias_value":"PFRSOIF2J6LYVVM2","created_at":"2026-07-20T01:19:00Z"},{"alias_kind":"pith_short_8","alias_value":"PFRSOIF2","created_at":"2026-07-20T01:19:00Z"}],"graph_snapshots":[{"event_id":"sha256:4ffc060c9ebe39b18a07465905d5637cff0357c5c35520c210618c9e4be0c854","target":"graph","created_at":"2026-07-20T01:19:00Z","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/2607.15616/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The standard approach for generating deeply degenerate quantum gases is evaporative or sympathetic cooling in a harmonic trap, after which the gas has reached its minimum entropy. All subsequent state transformations rely on adiabatic changes of a closed system, and coupling to the environment or non-adiabatic processes monotonically increase the entropy. Here, we demonstrate that this experimental paradigm can be bypassed by utilizing species-selective trapping with a low-dissipation optical tune-out trap in a dual-species mixture. We successfully reduce the entropy of a two-component fermion","authors_text":"Alexandre de Martino, Christian Gro{\\ss}, Eduard Heidt, Florian Kiesel, Jonas Auch, Kirill Karpov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2026-07-17T04:28:58Z","title":"Isothermal compression of a Fermi gas to deep quantum degeneracy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.15616","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":"sha256:241e962234335c54488aceb2133c363c55c623d302f630a8bd7d890768243cdf","target":"record","created_at":"2026-07-20T01:19:00Z","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":"10d196ec5b8f9dae71ac4f3c1ecb0393609a22bc2a289853d91fe4038fdafa94","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2026-07-17T04:28:58Z","title_canon_sha256":"ac07cafe7be4da292e7691337a5d8a58624d0023481a3e0e8fbc414ac7aa4388"},"schema_version":"1.0","source":{"id":"2607.15616","kind":"arxiv","version":1}},"canonical_sha256":"79632720ba4f978ad59a39881d1d84386213d309933ba616d1bc812ad820fce6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"79632720ba4f978ad59a39881d1d84386213d309933ba616d1bc812ad820fce6","first_computed_at":"2026-07-20T01:19:00.456683Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-20T01:19:00.456683Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VipVptFeY80arqOiS546PZDQ14BWBPxD/oX58VBSu+P3FDpMwq+YL+hAR7JN9BLmBYtd9xP02qaDLjO/YdUmAg==","signature_status":"signed_v1","signed_at":"2026-07-20T01:19:00.457615Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.15616","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:241e962234335c54488aceb2133c363c55c623d302f630a8bd7d890768243cdf","sha256:4ffc060c9ebe39b18a07465905d5637cff0357c5c35520c210618c9e4be0c854"],"state_sha256":"eaf3e822a51baca5722ff62b2afc5786d6cb807f72b772ded01aad3bd323a2bf"}