{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:22LYL7QBVBTHPPHOSB7TAMR6X2","short_pith_number":"pith:22LYL7QB","canonical_record":{"source":{"id":"2002.01756","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-02-05T12:34:26Z","cross_cats_sorted":["astro-ph.CO","hep-ph","hep-th"],"title_canon_sha256":"badcdd98420507e3686d7282f981e590326a796c284ca0a77d64f6ec566ed3b6","abstract_canon_sha256":"643652dbe2a106a8b7eb0c43444576ffcb6e4340e445e6691ee9993101e6688d"},"schema_version":"1.0"},"canonical_sha256":"d69785fe01a86677bcee907f30323ebeb177c37134678393970e8d20ab5bb6d3","source":{"kind":"arxiv","id":"2002.01756","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.01756","created_at":"2026-07-05T03:00:44Z"},{"alias_kind":"arxiv_version","alias_value":"2002.01756v4","created_at":"2026-07-05T03:00:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.01756","created_at":"2026-07-05T03:00:44Z"},{"alias_kind":"pith_short_12","alias_value":"22LYL7QBVBTH","created_at":"2026-07-05T03:00:44Z"},{"alias_kind":"pith_short_16","alias_value":"22LYL7QBVBTHPPHO","created_at":"2026-07-05T03:00:44Z"},{"alias_kind":"pith_short_8","alias_value":"22LYL7QB","created_at":"2026-07-05T03:00:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:22LYL7QBVBTHPPHOSB7TAMR6X2","target":"record","payload":{"canonical_record":{"source":{"id":"2002.01756","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-02-05T12:34:26Z","cross_cats_sorted":["astro-ph.CO","hep-ph","hep-th"],"title_canon_sha256":"badcdd98420507e3686d7282f981e590326a796c284ca0a77d64f6ec566ed3b6","abstract_canon_sha256":"643652dbe2a106a8b7eb0c43444576ffcb6e4340e445e6691ee9993101e6688d"},"schema_version":"1.0"},"canonical_sha256":"d69785fe01a86677bcee907f30323ebeb177c37134678393970e8d20ab5bb6d3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:00:44.850893Z","signature_b64":"6Js1heTSnpZpgO2AlVzs30Mnr7nCKRUlkZCvuvqHMoiKMR9uygMhJ0zRha1k88SyK1OrHMADmX+TML0dn/ixBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d69785fe01a86677bcee907f30323ebeb177c37134678393970e8d20ab5bb6d3","last_reissued_at":"2026-07-05T03:00:44.850473Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:00:44.850473Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2002.01756","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T03:00:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vJuBY25c8gN60gDKQ3Hv4+G5cXAfZfm2ffaSk9lEK68a6OZnnnqqiYWOd8n/9IpXdsh7p4mCSh4KfqVjdcJeCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T20:51:48.894034Z"},"content_sha256":"83faf99b0f9567fbd2345337ea4ac7c605bd557f280f2345945c6321c33f7bb1","schema_version":"1.0","event_id":"sha256:83faf99b0f9567fbd2345337ea4ac7c605bd557f280f2345945c6321c33f7bb1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:22LYL7QBVBTHPPHOSB7TAMR6X2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"N=2 PNGB Quintessence Dark Energy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-ph","hep-th"],"primary_cat":"gr-qc","authors_text":"Jungjai Lee, Keunsu Cheon","submitted_at":"2020-02-05T12:34:26Z","abstract_excerpt":"In this paper we show that a pseudo-Nambu-Goldstone boson (PNGB) quintessence of spontaneous symmetry breaking (SSB) is responsible for an epoch of the late time cosmic acceleration. We suggest that an N=2 PNGB quintessence with SSB can give rise to the fast-roll cosmic acceleration in evolution of the Universe. In the N=2 PNGB quintessence model, the standard slow-roll condition in which the absolute value of the tachyonic mass squared $|m_q^2|$ of this model is much less than the square of the Hubble constant $H^2$, is broken down to the fast-roll condition, $|m_q^2|=O(H^2)$. However, it is "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.01756","kind":"arxiv","version":4},"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/2002.01756/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":"2026-07-05T03:00:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tMP3g8Qh7Yl5HyXmeNCqiiL+ZhRKJ1h9gCKnA4jS1JqViUXarqvuBnCH07IltfafaX2+O0hCCCGLOwJcSojaDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T20:51:48.894875Z"},"content_sha256":"5cea99995cc5c3c64327f8e973ef98d1267a528c2c357305cce521c3a2fb3694","schema_version":"1.0","event_id":"sha256:5cea99995cc5c3c64327f8e973ef98d1267a528c2c357305cce521c3a2fb3694"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/22LYL7QBVBTHPPHOSB7TAMR6X2/bundle.json","state_url":"https://pith.science/pith/22LYL7QBVBTHPPHOSB7TAMR6X2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/22LYL7QBVBTHPPHOSB7TAMR6X2/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":"2026-08-04T20:51:48Z","links":{"resolver":"https://pith.science/pith/22LYL7QBVBTHPPHOSB7TAMR6X2","bundle":"https://pith.science/pith/22LYL7QBVBTHPPHOSB7TAMR6X2/bundle.json","state":"https://pith.science/pith/22LYL7QBVBTHPPHOSB7TAMR6X2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/22LYL7QBVBTHPPHOSB7TAMR6X2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:22LYL7QBVBTHPPHOSB7TAMR6X2","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":"643652dbe2a106a8b7eb0c43444576ffcb6e4340e445e6691ee9993101e6688d","cross_cats_sorted":["astro-ph.CO","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-02-05T12:34:26Z","title_canon_sha256":"badcdd98420507e3686d7282f981e590326a796c284ca0a77d64f6ec566ed3b6"},"schema_version":"1.0","source":{"id":"2002.01756","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.01756","created_at":"2026-07-05T03:00:44Z"},{"alias_kind":"arxiv_version","alias_value":"2002.01756v4","created_at":"2026-07-05T03:00:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.01756","created_at":"2026-07-05T03:00:44Z"},{"alias_kind":"pith_short_12","alias_value":"22LYL7QBVBTH","created_at":"2026-07-05T03:00:44Z"},{"alias_kind":"pith_short_16","alias_value":"22LYL7QBVBTHPPHO","created_at":"2026-07-05T03:00:44Z"},{"alias_kind":"pith_short_8","alias_value":"22LYL7QB","created_at":"2026-07-05T03:00:44Z"}],"graph_snapshots":[{"event_id":"sha256:5cea99995cc5c3c64327f8e973ef98d1267a528c2c357305cce521c3a2fb3694","target":"graph","created_at":"2026-07-05T03:00:44Z","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/2002.01756/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper we show that a pseudo-Nambu-Goldstone boson (PNGB) quintessence of spontaneous symmetry breaking (SSB) is responsible for an epoch of the late time cosmic acceleration. We suggest that an N=2 PNGB quintessence with SSB can give rise to the fast-roll cosmic acceleration in evolution of the Universe. In the N=2 PNGB quintessence model, the standard slow-roll condition in which the absolute value of the tachyonic mass squared $|m_q^2|$ of this model is much less than the square of the Hubble constant $H^2$, is broken down to the fast-roll condition, $|m_q^2|=O(H^2)$. However, it is ","authors_text":"Jungjai Lee, Keunsu Cheon","cross_cats":["astro-ph.CO","hep-ph","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-02-05T12:34:26Z","title":"N=2 PNGB Quintessence Dark Energy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.01756","kind":"arxiv","version":4},"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":"sha256:83faf99b0f9567fbd2345337ea4ac7c605bd557f280f2345945c6321c33f7bb1","target":"record","created_at":"2026-07-05T03:00:44Z","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":"643652dbe2a106a8b7eb0c43444576ffcb6e4340e445e6691ee9993101e6688d","cross_cats_sorted":["astro-ph.CO","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-02-05T12:34:26Z","title_canon_sha256":"badcdd98420507e3686d7282f981e590326a796c284ca0a77d64f6ec566ed3b6"},"schema_version":"1.0","source":{"id":"2002.01756","kind":"arxiv","version":4}},"canonical_sha256":"d69785fe01a86677bcee907f30323ebeb177c37134678393970e8d20ab5bb6d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d69785fe01a86677bcee907f30323ebeb177c37134678393970e8d20ab5bb6d3","first_computed_at":"2026-07-05T03:00:44.850473Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:00:44.850473Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6Js1heTSnpZpgO2AlVzs30Mnr7nCKRUlkZCvuvqHMoiKMR9uygMhJ0zRha1k88SyK1OrHMADmX+TML0dn/ixBg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:00:44.850893Z","signed_message":"canonical_sha256_bytes"},"source_id":"2002.01756","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:83faf99b0f9567fbd2345337ea4ac7c605bd557f280f2345945c6321c33f7bb1","sha256:5cea99995cc5c3c64327f8e973ef98d1267a528c2c357305cce521c3a2fb3694"],"state_sha256":"eb1cde6f3e261a8b34f0eb60011b1bcfd8e1cb480819a182c846ca2ee8ac4423"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JtIjeECxT8QDnDfpBICW0j5rB/HQUbA9CSlA+tkeqYwkCXFvGLGubEcBLErDjeQUNrzKcTLrW7a+ifFK+Od+AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T20:51:48.901483Z","bundle_sha256":"bbd31f3ddda5c60b52e43f7d65f7de1ee6fb60ae41f33961d888af1c8a3caee6"}}