{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:56CK22GVCHCFUGM67RIIMTBSDF","short_pith_number":"pith:56CK22GV","canonical_record":{"source":{"id":"cond-mat/0108250","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.soft","submitted_at":"2001-08-15T16:20:25Z","cross_cats_sorted":["physics.atom-ph","physics.chem-ph"],"title_canon_sha256":"ebe87b703df93b6655c10a7032375865efd03e7799116e9b209a6ed544ecd13d","abstract_canon_sha256":"fca60e3470485b4ab8c37f64e92da112209d182d513f60d8d3b13ff3cc1ebb87"},"schema_version":"1.0"},"canonical_sha256":"ef84ad68d511c45a199efc50864c32197b7c9807f4cecfaad93f0f241d51453e","source":{"kind":"arxiv","id":"cond-mat/0108250","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0108250","created_at":"2026-05-18T01:07:02Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0108250v2","created_at":"2026-05-18T01:07:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0108250","created_at":"2026-05-18T01:07:02Z"},{"alias_kind":"pith_short_12","alias_value":"56CK22GVCHCF","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"56CK22GVCHCFUGM6","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"56CK22GV","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:56CK22GVCHCFUGM67RIIMTBSDF","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0108250","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.soft","submitted_at":"2001-08-15T16:20:25Z","cross_cats_sorted":["physics.atom-ph","physics.chem-ph"],"title_canon_sha256":"ebe87b703df93b6655c10a7032375865efd03e7799116e9b209a6ed544ecd13d","abstract_canon_sha256":"fca60e3470485b4ab8c37f64e92da112209d182d513f60d8d3b13ff3cc1ebb87"},"schema_version":"1.0"},"canonical_sha256":"ef84ad68d511c45a199efc50864c32197b7c9807f4cecfaad93f0f241d51453e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:02.454941Z","signature_b64":"05dNmhcZ5cL4E3UC8PEyj8vm4KDKa9AXy9ypwZ6C8RiFHHoI1mtKmW4Cj+BjEHW+E3mW9T1JNxJpNNRTE9MSBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ef84ad68d511c45a199efc50864c32197b7c9807f4cecfaad93f0f241d51453e","last_reissued_at":"2026-05-18T01:07:02.454199Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:02.454199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0108250","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":"2026-05-18T01:07:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NFz04efyJLrTQFhVU+5zZHsxGUw2H0+axFr2HgQwckMlpgn6Q4xnkT01qE+R9SXPy5R0lzB9dXjuHgJ8Dlb/Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T03:25:59.878426Z"},"content_sha256":"9f24f9b5229399b4ac677dea9dbb9d3347be1f3321f802c4ee3202748a09cbd2","schema_version":"1.0","event_id":"sha256:9f24f9b5229399b4ac677dea9dbb9d3347be1f3321f802c4ee3202748a09cbd2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:56CK22GVCHCFUGM67RIIMTBSDF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Positronium-positronium interaction: Resonance, scattering length, and Bose-Einstein condensation","license":"","headline":"","cross_cats":["physics.atom-ph","physics.chem-ph"],"primary_cat":"cond-mat.soft","authors_text":"Sadhan K. Adhikari","submitted_at":"2001-08-15T16:20:25Z","abstract_excerpt":"The low-energy scattering of ortho positronium (Ps) by ortho Ps has been studied in a full quantum mechanical coupled-channel approach. In the singlet channel (total spin $s_T=0$) we find S- and P-wave resonances at 3.35 eV (width 0.02 eV) and 5.05 eV (width 0.04 eV), respectively and a binding of 0.44 eV of Ps$_2$. The scattering length for $s_T=0$ is 3.95 \\AA and for $s_T=2$ is 0.83 \\AA . The small $s_T=2$ scattering length makes the spin-polarized ortho Ps atoms an almost noninteracting ideal gas which may undergo Bose-Einstein condensation."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0108250","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":"2026-05-18T01:07:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sJ5Y80TAdv6YkNcEg/pQKXoFYNXy8LjZ0QaEBvM6USCFxJ7VTQoaFxWQ08pz98o/n/RRnYIR1EhYC7vHS/A2Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T03:25:59.878980Z"},"content_sha256":"bc50f85aa0a1f6992b4c59173c8aa5d5fbd896fd469652ff57fe1e6bcc6929e2","schema_version":"1.0","event_id":"sha256:bc50f85aa0a1f6992b4c59173c8aa5d5fbd896fd469652ff57fe1e6bcc6929e2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/56CK22GVCHCFUGM67RIIMTBSDF/bundle.json","state_url":"https://pith.science/pith/56CK22GVCHCFUGM67RIIMTBSDF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/56CK22GVCHCFUGM67RIIMTBSDF/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":"2026-06-04T03:25:59Z","links":{"resolver":"https://pith.science/pith/56CK22GVCHCFUGM67RIIMTBSDF","bundle":"https://pith.science/pith/56CK22GVCHCFUGM67RIIMTBSDF/bundle.json","state":"https://pith.science/pith/56CK22GVCHCFUGM67RIIMTBSDF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/56CK22GVCHCFUGM67RIIMTBSDF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:56CK22GVCHCFUGM67RIIMTBSDF","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":"fca60e3470485b4ab8c37f64e92da112209d182d513f60d8d3b13ff3cc1ebb87","cross_cats_sorted":["physics.atom-ph","physics.chem-ph"],"license":"","primary_cat":"cond-mat.soft","submitted_at":"2001-08-15T16:20:25Z","title_canon_sha256":"ebe87b703df93b6655c10a7032375865efd03e7799116e9b209a6ed544ecd13d"},"schema_version":"1.0","source":{"id":"cond-mat/0108250","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0108250","created_at":"2026-05-18T01:07:02Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0108250v2","created_at":"2026-05-18T01:07:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0108250","created_at":"2026-05-18T01:07:02Z"},{"alias_kind":"pith_short_12","alias_value":"56CK22GVCHCF","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"56CK22GVCHCFUGM6","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"56CK22GV","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:bc50f85aa0a1f6992b4c59173c8aa5d5fbd896fd469652ff57fe1e6bcc6929e2","target":"graph","created_at":"2026-05-18T01:07:02Z","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 low-energy scattering of ortho positronium (Ps) by ortho Ps has been studied in a full quantum mechanical coupled-channel approach. In the singlet channel (total spin $s_T=0$) we find S- and P-wave resonances at 3.35 eV (width 0.02 eV) and 5.05 eV (width 0.04 eV), respectively and a binding of 0.44 eV of Ps$_2$. The scattering length for $s_T=0$ is 3.95 \\AA and for $s_T=2$ is 0.83 \\AA . The small $s_T=2$ scattering length makes the spin-polarized ortho Ps atoms an almost noninteracting ideal gas which may undergo Bose-Einstein condensation.","authors_text":"Sadhan K. Adhikari","cross_cats":["physics.atom-ph","physics.chem-ph"],"headline":"","license":"","primary_cat":"cond-mat.soft","submitted_at":"2001-08-15T16:20:25Z","title":"Positronium-positronium interaction: Resonance, scattering length, and Bose-Einstein condensation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0108250","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":"sha256:9f24f9b5229399b4ac677dea9dbb9d3347be1f3321f802c4ee3202748a09cbd2","target":"record","created_at":"2026-05-18T01:07:02Z","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":"fca60e3470485b4ab8c37f64e92da112209d182d513f60d8d3b13ff3cc1ebb87","cross_cats_sorted":["physics.atom-ph","physics.chem-ph"],"license":"","primary_cat":"cond-mat.soft","submitted_at":"2001-08-15T16:20:25Z","title_canon_sha256":"ebe87b703df93b6655c10a7032375865efd03e7799116e9b209a6ed544ecd13d"},"schema_version":"1.0","source":{"id":"cond-mat/0108250","kind":"arxiv","version":2}},"canonical_sha256":"ef84ad68d511c45a199efc50864c32197b7c9807f4cecfaad93f0f241d51453e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ef84ad68d511c45a199efc50864c32197b7c9807f4cecfaad93f0f241d51453e","first_computed_at":"2026-05-18T01:07:02.454199Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:02.454199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"05dNmhcZ5cL4E3UC8PEyj8vm4KDKa9AXy9ypwZ6C8RiFHHoI1mtKmW4Cj+BjEHW+E3mW9T1JNxJpNNRTE9MSBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:02.454941Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0108250","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9f24f9b5229399b4ac677dea9dbb9d3347be1f3321f802c4ee3202748a09cbd2","sha256:bc50f85aa0a1f6992b4c59173c8aa5d5fbd896fd469652ff57fe1e6bcc6929e2"],"state_sha256":"f1b8fc56c8322e4421b1d937f2a58b517b34d77716a0cf9cf371f34e731c38f3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WGmEj3aZ29Xi97kKtYemlXbZtfGI47NzZpFpJUhdBXpWKBR7CWcPMWSb4ionsxd0kQU6EUAI9ZmoP/ORFUzkAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T03:25:59.882047Z","bundle_sha256":"f4afe8ede08d2f855d68c2b5e743c93252a151625976bef83e733dd6a7658985"}}