{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:QQEI3M35CERI6PD4VQM7YFMD5W","short_pith_number":"pith:QQEI3M35","canonical_record":{"source":{"id":"hep-th/0501145","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"2005-01-19T10:54:21Z","cross_cats_sorted":[],"title_canon_sha256":"42a48d4affad78b5cb59901f0b4f2259e98f1b5be405a96085339244307af02d","abstract_canon_sha256":"079d8b6a177b48f339ef6106ad3c89da855bb17696257e326501286802ffe59c"},"schema_version":"1.0"},"canonical_sha256":"84088db37d11228f3c7cac19fc1583ed8e425912484b9dcd5d44a1f211917ac7","source":{"kind":"arxiv","id":"hep-th/0501145","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/0501145","created_at":"2026-05-18T01:38:45Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/0501145v2","created_at":"2026-05-18T01:38:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/0501145","created_at":"2026-05-18T01:38:45Z"},{"alias_kind":"pith_short_12","alias_value":"QQEI3M35CERI","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"QQEI3M35CERI6PD4","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"QQEI3M35","created_at":"2026-05-18T12:25:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:QQEI3M35CERI6PD4VQM7YFMD5W","target":"record","payload":{"canonical_record":{"source":{"id":"hep-th/0501145","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"2005-01-19T10:54:21Z","cross_cats_sorted":[],"title_canon_sha256":"42a48d4affad78b5cb59901f0b4f2259e98f1b5be405a96085339244307af02d","abstract_canon_sha256":"079d8b6a177b48f339ef6106ad3c89da855bb17696257e326501286802ffe59c"},"schema_version":"1.0"},"canonical_sha256":"84088db37d11228f3c7cac19fc1583ed8e425912484b9dcd5d44a1f211917ac7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:38:45.867207Z","signature_b64":"vvQUK2XxoP3rBdOHInsz25KLWt8OYK/hLRf2yMONENuTuXszdluB/xld/ryyyOxQWA9U8kOf7aFYXsUSW9GzDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"84088db37d11228f3c7cac19fc1583ed8e425912484b9dcd5d44a1f211917ac7","last_reissued_at":"2026-05-18T01:38:45.866767Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:38:45.866767Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-th/0501145","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":"2026-05-18T01:38:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HF8FRCUsy5w8G8Doz4hevjeFj4xIO9WRMkuF8A2dFWn90w9ixtJYk8J2qQccwvA2vXuIVqjFARc6o0V/OGEvDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T15:02:53.636460Z"},"content_sha256":"f69847656964210fece009c4ace9b6926036623f76d209d777416aa2c148ecee","schema_version":"1.0","event_id":"sha256:f69847656964210fece009c4ace9b6926036623f76d209d777416aa2c148ecee"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:QQEI3M35CERI6PD4VQM7YFMD5W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Closed strings in Misner space: a toy model for a Big Bounce ?","license":"","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"Boris Pioline (LPTHE, Bruno Durin (LPTHE), LPTENS)","submitted_at":"2005-01-19T10:54:21Z","abstract_excerpt":"Misner space, also known as the Lorentzian orbifold $R^{1,1}/boost$, is one of the simplest examples of a cosmological singularity in string theory. In this lecture, we review the semi-classical propagation of closed strings in this background, with a particular emphasis on the twisted sectors of the orbifold. Tree-level scattering amplitudes and the one-loop vacuum amplitude are also discussed."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/0501145","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":"2026-05-18T01:38:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sFX8kEds9w7PUEgnlS/GBmA6c2HNfjK0luFmE/30Aq1QNLkmBF/cXD9T25zXWyrgcsQi4LREya6UQhzzIu9ACw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T15:02:53.636805Z"},"content_sha256":"af12b35e71c40ca9a32e24dd8fa9e2d330df04c8da6c5a14c8f6969610c890d0","schema_version":"1.0","event_id":"sha256:af12b35e71c40ca9a32e24dd8fa9e2d330df04c8da6c5a14c8f6969610c890d0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QQEI3M35CERI6PD4VQM7YFMD5W/bundle.json","state_url":"https://pith.science/pith/QQEI3M35CERI6PD4VQM7YFMD5W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QQEI3M35CERI6PD4VQM7YFMD5W/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":"2026-06-05T15:02:53Z","links":{"resolver":"https://pith.science/pith/QQEI3M35CERI6PD4VQM7YFMD5W","bundle":"https://pith.science/pith/QQEI3M35CERI6PD4VQM7YFMD5W/bundle.json","state":"https://pith.science/pith/QQEI3M35CERI6PD4VQM7YFMD5W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QQEI3M35CERI6PD4VQM7YFMD5W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:QQEI3M35CERI6PD4VQM7YFMD5W","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":"079d8b6a177b48f339ef6106ad3c89da855bb17696257e326501286802ffe59c","cross_cats_sorted":[],"license":"","primary_cat":"hep-th","submitted_at":"2005-01-19T10:54:21Z","title_canon_sha256":"42a48d4affad78b5cb59901f0b4f2259e98f1b5be405a96085339244307af02d"},"schema_version":"1.0","source":{"id":"hep-th/0501145","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/0501145","created_at":"2026-05-18T01:38:45Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/0501145v2","created_at":"2026-05-18T01:38:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/0501145","created_at":"2026-05-18T01:38:45Z"},{"alias_kind":"pith_short_12","alias_value":"QQEI3M35CERI","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"QQEI3M35CERI6PD4","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"QQEI3M35","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:af12b35e71c40ca9a32e24dd8fa9e2d330df04c8da6c5a14c8f6969610c890d0","target":"graph","created_at":"2026-05-18T01:38:45Z","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":"Misner space, also known as the Lorentzian orbifold $R^{1,1}/boost$, is one of the simplest examples of a cosmological singularity in string theory. In this lecture, we review the semi-classical propagation of closed strings in this background, with a particular emphasis on the twisted sectors of the orbifold. Tree-level scattering amplitudes and the one-loop vacuum amplitude are also discussed.","authors_text":"Boris Pioline (LPTHE, Bruno Durin (LPTHE), LPTENS)","cross_cats":[],"headline":"","license":"","primary_cat":"hep-th","submitted_at":"2005-01-19T10:54:21Z","title":"Closed strings in Misner space: a toy model for a Big Bounce ?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/0501145","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:f69847656964210fece009c4ace9b6926036623f76d209d777416aa2c148ecee","target":"record","created_at":"2026-05-18T01:38:45Z","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":"079d8b6a177b48f339ef6106ad3c89da855bb17696257e326501286802ffe59c","cross_cats_sorted":[],"license":"","primary_cat":"hep-th","submitted_at":"2005-01-19T10:54:21Z","title_canon_sha256":"42a48d4affad78b5cb59901f0b4f2259e98f1b5be405a96085339244307af02d"},"schema_version":"1.0","source":{"id":"hep-th/0501145","kind":"arxiv","version":2}},"canonical_sha256":"84088db37d11228f3c7cac19fc1583ed8e425912484b9dcd5d44a1f211917ac7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"84088db37d11228f3c7cac19fc1583ed8e425912484b9dcd5d44a1f211917ac7","first_computed_at":"2026-05-18T01:38:45.866767Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:38:45.866767Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vvQUK2XxoP3rBdOHInsz25KLWt8OYK/hLRf2yMONENuTuXszdluB/xld/ryyyOxQWA9U8kOf7aFYXsUSW9GzDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:38:45.867207Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-th/0501145","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f69847656964210fece009c4ace9b6926036623f76d209d777416aa2c148ecee","sha256:af12b35e71c40ca9a32e24dd8fa9e2d330df04c8da6c5a14c8f6969610c890d0"],"state_sha256":"45eb1ba55d5ab3f86929a27eb74e6749a5fb4c4df6de25cf7f894fa61b8c57a1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dgSXxE5IS++YOM7acaR21R1cJzsvtMZnZ98Wv9P/jNP15zYBHAobiIhMrGsKlTAXBuAgaWPWeBxExVYghCWxBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T15:02:53.638860Z","bundle_sha256":"1d21d95bcc4488b9c82964ce9134fc45e28cbeab07ca980fe941588a554513e7"}}