{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:4ELGA3VLX27GUZJZIBXDU6LMNC","short_pith_number":"pith:4ELGA3VL","canonical_record":{"source":{"id":"1207.1539","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-07-06T07:27:36Z","cross_cats_sorted":["cond-mat.soft"],"title_canon_sha256":"3679f3eda81a22512d3718f9f36fa6e71bc281c1abaecfb23a67d2baa341e48c","abstract_canon_sha256":"257633bf162c037089b4006f4098380cbe1abec27c2cb1c2c3d453a27571636d"},"schema_version":"1.0"},"canonical_sha256":"e116606eabbebe6a6539406e3a796c68bf3c2e64138b8bd2fe26b6aacc75f2a4","source":{"kind":"arxiv","id":"1207.1539","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.1539","created_at":"2026-05-18T01:56:33Z"},{"alias_kind":"arxiv_version","alias_value":"1207.1539v2","created_at":"2026-05-18T01:56:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.1539","created_at":"2026-05-18T01:56:33Z"},{"alias_kind":"pith_short_12","alias_value":"4ELGA3VLX27G","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"4ELGA3VLX27GUZJZ","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"4ELGA3VL","created_at":"2026-05-18T12:26:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:4ELGA3VLX27GUZJZIBXDU6LMNC","target":"record","payload":{"canonical_record":{"source":{"id":"1207.1539","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-07-06T07:27:36Z","cross_cats_sorted":["cond-mat.soft"],"title_canon_sha256":"3679f3eda81a22512d3718f9f36fa6e71bc281c1abaecfb23a67d2baa341e48c","abstract_canon_sha256":"257633bf162c037089b4006f4098380cbe1abec27c2cb1c2c3d453a27571636d"},"schema_version":"1.0"},"canonical_sha256":"e116606eabbebe6a6539406e3a796c68bf3c2e64138b8bd2fe26b6aacc75f2a4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:56:33.944250Z","signature_b64":"LN3kqz90pYadOUXRdLRBFGQEObeH4aTevXKV+OGZ0FSwrXUNurYVL0URxDH8LC7gX63pl7VaaKtB25UfGLTnAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e116606eabbebe6a6539406e3a796c68bf3c2e64138b8bd2fe26b6aacc75f2a4","last_reissued_at":"2026-05-18T01:56:33.943660Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:56:33.943660Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1207.1539","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":"2026-05-18T01:56:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"avr5C8JLpOwPLKhZdAEXNOZxcz3kzq0VS5vP6SCYufxjFvQOyq5V6bK+KmtCJabbk1Jpq4YZC44b4MroSm3/AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T00:59:40.800936Z"},"content_sha256":"009734be196e8c9547b0b4030c462660bd664b8eb657655b44a759171b614494","schema_version":"1.0","event_id":"sha256:009734be196e8c9547b0b4030c462660bd664b8eb657655b44a759171b614494"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:4ELGA3VLX27GUZJZIBXDU6LMNC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fermi surface instabilities at finite Temperature","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.soft"],"primary_cat":"cond-mat.str-el","authors_text":"D. C. Cabra, N. Grandi, P. Rodr\\'iguez Ponte","submitted_at":"2012-07-06T07:27:36Z","abstract_excerpt":"We present a new method to detect Fermi surface instabilities for interacting systems at finite temperature. We first apply it to a list of cases studied previously, recovering already known results in a very economic way, and obtaining most of the information on the phase diagram analytically. As an example, in the continuum limit we obtain the critical temperature as an implicit function of the magnetic field and the chemical potential $T_c(\\mu,h)$. By applying the method to a model proposed to describe reentrant behavior in $Sr_3Ru_2O_7$, we reproduce the phase diagram obtained experimental"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.1539","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":"2026-05-18T01:56:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JpzM1QJvD4eEv7ua/22IOpt85QnJ1lBT/0xKvN4XRJw6UX/+3L/5cs4AU9beJQvqrRYJS4tM1+VtIubpYQZBCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T00:59:40.801635Z"},"content_sha256":"655e4ccc66415700c24ebb2a4f8d02ba54486c90912bf22e7d9b9146e8b78f76","schema_version":"1.0","event_id":"sha256:655e4ccc66415700c24ebb2a4f8d02ba54486c90912bf22e7d9b9146e8b78f76"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4ELGA3VLX27GUZJZIBXDU6LMNC/bundle.json","state_url":"https://pith.science/pith/4ELGA3VLX27GUZJZIBXDU6LMNC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4ELGA3VLX27GUZJZIBXDU6LMNC/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":"2026-06-10T00:59:40Z","links":{"resolver":"https://pith.science/pith/4ELGA3VLX27GUZJZIBXDU6LMNC","bundle":"https://pith.science/pith/4ELGA3VLX27GUZJZIBXDU6LMNC/bundle.json","state":"https://pith.science/pith/4ELGA3VLX27GUZJZIBXDU6LMNC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4ELGA3VLX27GUZJZIBXDU6LMNC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:4ELGA3VLX27GUZJZIBXDU6LMNC","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":"257633bf162c037089b4006f4098380cbe1abec27c2cb1c2c3d453a27571636d","cross_cats_sorted":["cond-mat.soft"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-07-06T07:27:36Z","title_canon_sha256":"3679f3eda81a22512d3718f9f36fa6e71bc281c1abaecfb23a67d2baa341e48c"},"schema_version":"1.0","source":{"id":"1207.1539","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.1539","created_at":"2026-05-18T01:56:33Z"},{"alias_kind":"arxiv_version","alias_value":"1207.1539v2","created_at":"2026-05-18T01:56:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.1539","created_at":"2026-05-18T01:56:33Z"},{"alias_kind":"pith_short_12","alias_value":"4ELGA3VLX27G","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"4ELGA3VLX27GUZJZ","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"4ELGA3VL","created_at":"2026-05-18T12:26:53Z"}],"graph_snapshots":[{"event_id":"sha256:655e4ccc66415700c24ebb2a4f8d02ba54486c90912bf22e7d9b9146e8b78f76","target":"graph","created_at":"2026-05-18T01:56:33Z","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":"We present a new method to detect Fermi surface instabilities for interacting systems at finite temperature. We first apply it to a list of cases studied previously, recovering already known results in a very economic way, and obtaining most of the information on the phase diagram analytically. As an example, in the continuum limit we obtain the critical temperature as an implicit function of the magnetic field and the chemical potential $T_c(\\mu,h)$. By applying the method to a model proposed to describe reentrant behavior in $Sr_3Ru_2O_7$, we reproduce the phase diagram obtained experimental","authors_text":"D. C. Cabra, N. Grandi, P. Rodr\\'iguez Ponte","cross_cats":["cond-mat.soft"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-07-06T07:27:36Z","title":"Fermi surface instabilities at finite Temperature"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.1539","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":"sha256:009734be196e8c9547b0b4030c462660bd664b8eb657655b44a759171b614494","target":"record","created_at":"2026-05-18T01:56:33Z","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":"257633bf162c037089b4006f4098380cbe1abec27c2cb1c2c3d453a27571636d","cross_cats_sorted":["cond-mat.soft"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-07-06T07:27:36Z","title_canon_sha256":"3679f3eda81a22512d3718f9f36fa6e71bc281c1abaecfb23a67d2baa341e48c"},"schema_version":"1.0","source":{"id":"1207.1539","kind":"arxiv","version":2}},"canonical_sha256":"e116606eabbebe6a6539406e3a796c68bf3c2e64138b8bd2fe26b6aacc75f2a4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e116606eabbebe6a6539406e3a796c68bf3c2e64138b8bd2fe26b6aacc75f2a4","first_computed_at":"2026-05-18T01:56:33.943660Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:56:33.943660Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LN3kqz90pYadOUXRdLRBFGQEObeH4aTevXKV+OGZ0FSwrXUNurYVL0URxDH8LC7gX63pl7VaaKtB25UfGLTnAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:56:33.944250Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.1539","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:009734be196e8c9547b0b4030c462660bd664b8eb657655b44a759171b614494","sha256:655e4ccc66415700c24ebb2a4f8d02ba54486c90912bf22e7d9b9146e8b78f76"],"state_sha256":"1da974d8d7c22d94b271527bb88cc0cafad41fedcf10ac1c43e547808b706b61"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"soK1Ra4qxvGPuGaJ0EgK5tVQJ/eR6Eo/ceCSnhwZXQgxHfNpOWrKvuXLYHRe6BwwMB49cB0c5qEW48y0U1gODA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T00:59:40.805430Z","bundle_sha256":"112e34be0731fff3bb94c0b0b5092fc31c3fc6eeab9d99096975ce74d3a566f0"}}