{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:EUMUPC65JJZ557Y5B7T7FVREVP","short_pith_number":"pith:EUMUPC65","canonical_record":{"source":{"id":"1507.05962","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-07-21T20:00:33Z","cross_cats_sorted":["cond-mat.quant-gas","hep-th"],"title_canon_sha256":"39e6e67977be2555fd6231064ce0ec9ed025eed8117d17ded3ffcb672f92fd8c","abstract_canon_sha256":"67fc3cc49d8ef22aa7ba40fead18ff5361b91bbc0a9efb6f2772731ae83ad14f"},"schema_version":"1.0"},"canonical_sha256":"2519478bdd4a73deff1d0fe7f2d624abf46c7077169fafef07ad9a9970526486","source":{"kind":"arxiv","id":"1507.05962","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.05962","created_at":"2026-05-18T01:30:58Z"},{"alias_kind":"arxiv_version","alias_value":"1507.05962v2","created_at":"2026-05-18T01:30:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.05962","created_at":"2026-05-18T01:30:58Z"},{"alias_kind":"pith_short_12","alias_value":"EUMUPC65JJZ5","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"EUMUPC65JJZ557Y5","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"EUMUPC65","created_at":"2026-05-18T12:29:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:EUMUPC65JJZ557Y5B7T7FVREVP","target":"record","payload":{"canonical_record":{"source":{"id":"1507.05962","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-07-21T20:00:33Z","cross_cats_sorted":["cond-mat.quant-gas","hep-th"],"title_canon_sha256":"39e6e67977be2555fd6231064ce0ec9ed025eed8117d17ded3ffcb672f92fd8c","abstract_canon_sha256":"67fc3cc49d8ef22aa7ba40fead18ff5361b91bbc0a9efb6f2772731ae83ad14f"},"schema_version":"1.0"},"canonical_sha256":"2519478bdd4a73deff1d0fe7f2d624abf46c7077169fafef07ad9a9970526486","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:30:58.106647Z","signature_b64":"kWhiaM+WekrU75Pj3g2uXQMlOZr7kNV2oyeyWqwdXiyUL0C18TSH4wx6/k9GodhmuPFYMEcSOvGzodZwhdr1Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2519478bdd4a73deff1d0fe7f2d624abf46c7077169fafef07ad9a9970526486","last_reissued_at":"2026-05-18T01:30:58.106081Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:30:58.106081Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1507.05962","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":"2026-05-18T01:30:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/o/y64fQgflTfIcUVmBpUyezwK65s6iIaFoiOWileZw2SfrBAibmmaBnRVeM9EVs/TZA3YEgTnvLhfvWCwuaDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:05:38.523844Z"},"content_sha256":"d5a9ff9590f8ab6bd1651cf94d66bdd44eb24bb3e0c4038ac84cb664c41ccb1d","schema_version":"1.0","event_id":"sha256:d5a9ff9590f8ab6bd1651cf94d66bdd44eb24bb3e0c4038ac84cb664c41ccb1d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:EUMUPC65JJZ557Y5B7T7FVREVP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hyperscaling at the spin density wave quantum critical point in two dimensional metals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.quant-gas","hep-th"],"primary_cat":"cond-mat.str-el","authors_text":"Aavishkar A. Patel, Philipp Strack, Subir Sachdev","submitted_at":"2015-07-21T20:00:33Z","abstract_excerpt":"The hyperscaling property implies that spatially isotropic critical quantum states in $d$ spatial dimensions have a specific heat which scales with temperature as $T^{d/z}$, and an optical conductivity which scales with frequency as $\\omega^{(d-2)/z}$ for $\\omega \\gg T$, where $z$ is the dynamic critical exponent. We examine the spin-density-wave critical fixed point of metals in $d=2$ found by Sur and Lee (Phys. Rev. B 91, 125136 (2015)) in an expansion in $\\epsilon = 3-d$. We find that the contributions of the \"hot spots\" on the Fermi surface to the optical conductivity and specific heat obe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.05962","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":"2026-05-18T01:30:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aW0Bqv7/L9svMJu2lHbLSS2SyHo1lNJds0QmJfjXEWofYZQelaA6socxqVhFfGnrwQytKo8xzmlCvNQqDtL0Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:05:38.524553Z"},"content_sha256":"decc4a971d181f0e2b1194f6a2cd8f62d9d044e51df542fb3eb18c7b7e06900b","schema_version":"1.0","event_id":"sha256:decc4a971d181f0e2b1194f6a2cd8f62d9d044e51df542fb3eb18c7b7e06900b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EUMUPC65JJZ557Y5B7T7FVREVP/bundle.json","state_url":"https://pith.science/pith/EUMUPC65JJZ557Y5B7T7FVREVP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EUMUPC65JJZ557Y5B7T7FVREVP/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":"2026-05-25T15:05:38Z","links":{"resolver":"https://pith.science/pith/EUMUPC65JJZ557Y5B7T7FVREVP","bundle":"https://pith.science/pith/EUMUPC65JJZ557Y5B7T7FVREVP/bundle.json","state":"https://pith.science/pith/EUMUPC65JJZ557Y5B7T7FVREVP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EUMUPC65JJZ557Y5B7T7FVREVP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:EUMUPC65JJZ557Y5B7T7FVREVP","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":"67fc3cc49d8ef22aa7ba40fead18ff5361b91bbc0a9efb6f2772731ae83ad14f","cross_cats_sorted":["cond-mat.quant-gas","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-07-21T20:00:33Z","title_canon_sha256":"39e6e67977be2555fd6231064ce0ec9ed025eed8117d17ded3ffcb672f92fd8c"},"schema_version":"1.0","source":{"id":"1507.05962","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.05962","created_at":"2026-05-18T01:30:58Z"},{"alias_kind":"arxiv_version","alias_value":"1507.05962v2","created_at":"2026-05-18T01:30:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.05962","created_at":"2026-05-18T01:30:58Z"},{"alias_kind":"pith_short_12","alias_value":"EUMUPC65JJZ5","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"EUMUPC65JJZ557Y5","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"EUMUPC65","created_at":"2026-05-18T12:29:19Z"}],"graph_snapshots":[{"event_id":"sha256:decc4a971d181f0e2b1194f6a2cd8f62d9d044e51df542fb3eb18c7b7e06900b","target":"graph","created_at":"2026-05-18T01:30:58Z","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 hyperscaling property implies that spatially isotropic critical quantum states in $d$ spatial dimensions have a specific heat which scales with temperature as $T^{d/z}$, and an optical conductivity which scales with frequency as $\\omega^{(d-2)/z}$ for $\\omega \\gg T$, where $z$ is the dynamic critical exponent. We examine the spin-density-wave critical fixed point of metals in $d=2$ found by Sur and Lee (Phys. Rev. B 91, 125136 (2015)) in an expansion in $\\epsilon = 3-d$. We find that the contributions of the \"hot spots\" on the Fermi surface to the optical conductivity and specific heat obe","authors_text":"Aavishkar A. Patel, Philipp Strack, Subir Sachdev","cross_cats":["cond-mat.quant-gas","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-07-21T20:00:33Z","title":"Hyperscaling at the spin density wave quantum critical point in two dimensional metals"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.05962","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:d5a9ff9590f8ab6bd1651cf94d66bdd44eb24bb3e0c4038ac84cb664c41ccb1d","target":"record","created_at":"2026-05-18T01:30:58Z","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":"67fc3cc49d8ef22aa7ba40fead18ff5361b91bbc0a9efb6f2772731ae83ad14f","cross_cats_sorted":["cond-mat.quant-gas","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-07-21T20:00:33Z","title_canon_sha256":"39e6e67977be2555fd6231064ce0ec9ed025eed8117d17ded3ffcb672f92fd8c"},"schema_version":"1.0","source":{"id":"1507.05962","kind":"arxiv","version":2}},"canonical_sha256":"2519478bdd4a73deff1d0fe7f2d624abf46c7077169fafef07ad9a9970526486","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2519478bdd4a73deff1d0fe7f2d624abf46c7077169fafef07ad9a9970526486","first_computed_at":"2026-05-18T01:30:58.106081Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:30:58.106081Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kWhiaM+WekrU75Pj3g2uXQMlOZr7kNV2oyeyWqwdXiyUL0C18TSH4wx6/k9GodhmuPFYMEcSOvGzodZwhdr1Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:30:58.106647Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.05962","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d5a9ff9590f8ab6bd1651cf94d66bdd44eb24bb3e0c4038ac84cb664c41ccb1d","sha256:decc4a971d181f0e2b1194f6a2cd8f62d9d044e51df542fb3eb18c7b7e06900b"],"state_sha256":"15249680791855ce6b42ee0d8cdfb9b101ea811f73a5dfd849d1b1090a9f4fb6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pLQRm5XgaG+DacFjRTG7GrsIpxneGXqK3VDtvpyT46EqZ6EYQE0lA+kIq7eEI0UJzCEjwgEqKQxdqAn7VDcMBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T15:05:38.528812Z","bundle_sha256":"b2e7dcb36becf51e743a725d8418aa9e5bfcd4a07d79ec32308730b934e21067"}}