{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:KIHDCHGJJKIPPOEWHBI7LRJPFU","short_pith_number":"pith:KIHDCHGJ","canonical_record":{"source":{"id":"2101.07836","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2021-01-19T19:44:11Z","cross_cats_sorted":[],"title_canon_sha256":"151f0109f2633e72f7165914acc93dd7bdfcdf50ca3758910dc21c5919335309","abstract_canon_sha256":"1c69b6808ff60431042d0a385cc9254558a98c467db39b3ec8cdf995065a97ba"},"schema_version":"1.0"},"canonical_sha256":"520e311cc94a90f7b8963851f5c52f2d14e184ae7666be6ff4fa637b070a650e","source":{"kind":"arxiv","id":"2101.07836","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.07836","created_at":"2026-07-05T02:35:34Z"},{"alias_kind":"arxiv_version","alias_value":"2101.07836v2","created_at":"2026-07-05T02:35:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.07836","created_at":"2026-07-05T02:35:34Z"},{"alias_kind":"pith_short_12","alias_value":"KIHDCHGJJKIP","created_at":"2026-07-05T02:35:34Z"},{"alias_kind":"pith_short_16","alias_value":"KIHDCHGJJKIPPOEW","created_at":"2026-07-05T02:35:34Z"},{"alias_kind":"pith_short_8","alias_value":"KIHDCHGJ","created_at":"2026-07-05T02:35:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:KIHDCHGJJKIPPOEWHBI7LRJPFU","target":"record","payload":{"canonical_record":{"source":{"id":"2101.07836","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2021-01-19T19:44:11Z","cross_cats_sorted":[],"title_canon_sha256":"151f0109f2633e72f7165914acc93dd7bdfcdf50ca3758910dc21c5919335309","abstract_canon_sha256":"1c69b6808ff60431042d0a385cc9254558a98c467db39b3ec8cdf995065a97ba"},"schema_version":"1.0"},"canonical_sha256":"520e311cc94a90f7b8963851f5c52f2d14e184ae7666be6ff4fa637b070a650e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:35:34.399155Z","signature_b64":"UX111rNzQIAHz5Jp12usbqBoN7qO26JSe0a39MK2ULMq3F96lNVkDkOHeaNyj2taBPj5lulyJBCE0rD95cLkDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"520e311cc94a90f7b8963851f5c52f2d14e184ae7666be6ff4fa637b070a650e","last_reissued_at":"2026-07-05T02:35:34.398642Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:35:34.398642Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2101.07836","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":"2026-07-05T02:35:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cSv7mRIptyPC5YZ8upHWJTocZRMwdf9UvQjMFuubE08NB3nNXJjyIeJ6EGRg1dWOllq9RSkHsSioyZnRA8u6Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T13:53:13.401795Z"},"content_sha256":"9a65603ab2872199ad967329e94a2167ff8815c175e46ad341456fe75e4ac84a","schema_version":"1.0","event_id":"sha256:9a65603ab2872199ad967329e94a2167ff8815c175e46ad341456fe75e4ac84a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:KIHDCHGJJKIPPOEWHBI7LRJPFU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Effective field theory for closed strings near the Hagedorn temperature","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"Ram Brustein, Yoav Zigdon","submitted_at":"2021-01-19T19:44:11Z","abstract_excerpt":"We discuss interacting, closed, bosonic and superstrings in thermal equilibrium at temperatures close to the Hagedorn temperature in flat space. We calculate S-matrix elements of the strings at the Hagedorn temperature and use them to construct a low-energy effective action for interacting strings near the Hagedorn temperature. We show, in particular, that the four-point amplitude of massless winding modes leads to a positive quartic interaction. Furthermore, the effective field theory has a generalized conformal structure, namely, it is conformally invariant when the temperature is assigned a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.07836","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/2101.07836/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":"2026-07-05T02:35:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bCcQlJDpDv1gxy2RNgykt9mDbJODU5fyZbyNHFKo2oHiKkqjrhg1NEK/rcTp9PT95i/Zf7rEMamwk9/+cyLSAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T13:53:13.402289Z"},"content_sha256":"ffc198269566a67174bd89aa21298d016263fa7b0d15e2b954cf962e810cd189","schema_version":"1.0","event_id":"sha256:ffc198269566a67174bd89aa21298d016263fa7b0d15e2b954cf962e810cd189"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KIHDCHGJJKIPPOEWHBI7LRJPFU/bundle.json","state_url":"https://pith.science/pith/KIHDCHGJJKIPPOEWHBI7LRJPFU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KIHDCHGJJKIPPOEWHBI7LRJPFU/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":"2026-08-08T13:53:13Z","links":{"resolver":"https://pith.science/pith/KIHDCHGJJKIPPOEWHBI7LRJPFU","bundle":"https://pith.science/pith/KIHDCHGJJKIPPOEWHBI7LRJPFU/bundle.json","state":"https://pith.science/pith/KIHDCHGJJKIPPOEWHBI7LRJPFU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KIHDCHGJJKIPPOEWHBI7LRJPFU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:KIHDCHGJJKIPPOEWHBI7LRJPFU","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":"1c69b6808ff60431042d0a385cc9254558a98c467db39b3ec8cdf995065a97ba","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2021-01-19T19:44:11Z","title_canon_sha256":"151f0109f2633e72f7165914acc93dd7bdfcdf50ca3758910dc21c5919335309"},"schema_version":"1.0","source":{"id":"2101.07836","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.07836","created_at":"2026-07-05T02:35:34Z"},{"alias_kind":"arxiv_version","alias_value":"2101.07836v2","created_at":"2026-07-05T02:35:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.07836","created_at":"2026-07-05T02:35:34Z"},{"alias_kind":"pith_short_12","alias_value":"KIHDCHGJJKIP","created_at":"2026-07-05T02:35:34Z"},{"alias_kind":"pith_short_16","alias_value":"KIHDCHGJJKIPPOEW","created_at":"2026-07-05T02:35:34Z"},{"alias_kind":"pith_short_8","alias_value":"KIHDCHGJ","created_at":"2026-07-05T02:35:34Z"}],"graph_snapshots":[{"event_id":"sha256:ffc198269566a67174bd89aa21298d016263fa7b0d15e2b954cf962e810cd189","target":"graph","created_at":"2026-07-05T02:35:34Z","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/2101.07836/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We discuss interacting, closed, bosonic and superstrings in thermal equilibrium at temperatures close to the Hagedorn temperature in flat space. We calculate S-matrix elements of the strings at the Hagedorn temperature and use them to construct a low-energy effective action for interacting strings near the Hagedorn temperature. We show, in particular, that the four-point amplitude of massless winding modes leads to a positive quartic interaction. Furthermore, the effective field theory has a generalized conformal structure, namely, it is conformally invariant when the temperature is assigned a","authors_text":"Ram Brustein, Yoav Zigdon","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2021-01-19T19:44:11Z","title":"Effective field theory for closed strings near the Hagedorn temperature"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.07836","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":"sha256:9a65603ab2872199ad967329e94a2167ff8815c175e46ad341456fe75e4ac84a","target":"record","created_at":"2026-07-05T02:35:34Z","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":"1c69b6808ff60431042d0a385cc9254558a98c467db39b3ec8cdf995065a97ba","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2021-01-19T19:44:11Z","title_canon_sha256":"151f0109f2633e72f7165914acc93dd7bdfcdf50ca3758910dc21c5919335309"},"schema_version":"1.0","source":{"id":"2101.07836","kind":"arxiv","version":2}},"canonical_sha256":"520e311cc94a90f7b8963851f5c52f2d14e184ae7666be6ff4fa637b070a650e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"520e311cc94a90f7b8963851f5c52f2d14e184ae7666be6ff4fa637b070a650e","first_computed_at":"2026-07-05T02:35:34.398642Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:35:34.398642Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UX111rNzQIAHz5Jp12usbqBoN7qO26JSe0a39MK2ULMq3F96lNVkDkOHeaNyj2taBPj5lulyJBCE0rD95cLkDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:35:34.399155Z","signed_message":"canonical_sha256_bytes"},"source_id":"2101.07836","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9a65603ab2872199ad967329e94a2167ff8815c175e46ad341456fe75e4ac84a","sha256:ffc198269566a67174bd89aa21298d016263fa7b0d15e2b954cf962e810cd189"],"state_sha256":"099c3ba51e44094567b3f9f02596d34804da6f1528e5b0a3343b74fde3621f4a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3FCaGE4gCM6hG3SedNYGtTE6aJU5LBNKWDZj9JQnuihf5SPU1fKe5bKkcdVSV4HZ1XgYkklU4erdCBt9Z/0XDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T13:53:13.407096Z","bundle_sha256":"ad6fcb6b39bd13bc4757f8c625d94d88641374489ef4951e7cdc44aa1ab1996b"}}