{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:PPGZ3MSREXUNOK7BHWBRJP5IRR","short_pith_number":"pith:PPGZ3MSR","canonical_record":{"source":{"id":"2008.02473","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-08-06T06:36:07Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"8972575a7951978fa6d25dd008706d1e91451b5edc2ccc050d3020b03a301fec","abstract_canon_sha256":"ac6ab65c55394d25b9fa26c8c7e4236cb830c1854f9cfcaeee8ca56b34224f25"},"schema_version":"1.0"},"canonical_sha256":"7bcd9db25125e8d72be13d8314bfa88c77a818e40b00af3944e547ed583a7cf1","source":{"kind":"arxiv","id":"2008.02473","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.02473","created_at":"2026-07-05T02:22:05Z"},{"alias_kind":"arxiv_version","alias_value":"2008.02473v2","created_at":"2026-07-05T02:22:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.02473","created_at":"2026-07-05T02:22:05Z"},{"alias_kind":"pith_short_12","alias_value":"PPGZ3MSREXUN","created_at":"2026-07-05T02:22:05Z"},{"alias_kind":"pith_short_16","alias_value":"PPGZ3MSREXUNOK7B","created_at":"2026-07-05T02:22:05Z"},{"alias_kind":"pith_short_8","alias_value":"PPGZ3MSR","created_at":"2026-07-05T02:22:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:PPGZ3MSREXUNOK7BHWBRJP5IRR","target":"record","payload":{"canonical_record":{"source":{"id":"2008.02473","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-08-06T06:36:07Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"8972575a7951978fa6d25dd008706d1e91451b5edc2ccc050d3020b03a301fec","abstract_canon_sha256":"ac6ab65c55394d25b9fa26c8c7e4236cb830c1854f9cfcaeee8ca56b34224f25"},"schema_version":"1.0"},"canonical_sha256":"7bcd9db25125e8d72be13d8314bfa88c77a818e40b00af3944e547ed583a7cf1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:22:05.589333Z","signature_b64":"GpvG0oyjeb2qfDEuVg3XnooBWC4dZqE/Wm9eZ5YimIWZ9dkXgGjgu9o2F3ho+YYCt+ytXH00pMlKo4gEoOJJDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7bcd9db25125e8d72be13d8314bfa88c77a818e40b00af3944e547ed583a7cf1","last_reissued_at":"2026-07-05T02:22:05.588827Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:22:05.588827Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.02473","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":"2026-07-05T02:22:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7wK21pTynPfTjLr3Ewi93ARC9uCtzpcM4WSvcGx7oALZmQEyWnuHQRI6p3hsCjAz/+/P1FfJTSEvj+kMt+VNBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T16:51:05.692413Z"},"content_sha256":"8cdd9eb517ae1b92de23c3a9acc8f178b57adb6af75715af0b1a21b053ccf3fb","schema_version":"1.0","event_id":"sha256:8cdd9eb517ae1b92de23c3a9acc8f178b57adb6af75715af0b1a21b053ccf3fb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:PPGZ3MSREXUNOK7BHWBRJP5IRR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Probing Axion-like Particles via CMB Polarization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"astro-ph.CO","authors_text":"Hiromasa Nakatsuka, Kai Murai, Tomohiro Fujita, Yuto Minami","submitted_at":"2020-08-06T06:36:07Z","abstract_excerpt":"Axion-like particles (ALPs) rotate the linear polarization of photons through the ALP-photon coupling and convert the cosmic microwave background (CMB) $E$-mode to the $B$-mode. We derive the relation between the ALP dynamics and the rotation angle by assuming that the ALP $\\phi$ has a quadratic potential, $V=m^2\\phi^2/2$. We compute the current and future sensitivities of CMB observations to the ALP-photon coupling $g$, which can reach $g=4\\times 10^{-21}\\,\\mathrm{GeV}^{-1}$ for $10^{-32}\\,\\mathrm{eV}\\lesssim m\\lesssim 10^{-28}\\,\\mathrm{eV}$ and extensively exceed the other searches for any m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.02473","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/2008.02473/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":"2026-07-05T02:22:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E8Vta3sWiXuW0xP2Ul40jexrt6dh9H6hHmqWI69ef/FXoRP8EKLPZ5bj+QxnKPwjN8KCeYO0u4VejBrGU3RKCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T16:51:05.693463Z"},"content_sha256":"0f90da85ac0c23115464450fc21953fe88a92a504938c102d5d76b92d73c1c99","schema_version":"1.0","event_id":"sha256:0f90da85ac0c23115464450fc21953fe88a92a504938c102d5d76b92d73c1c99"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PPGZ3MSREXUNOK7BHWBRJP5IRR/bundle.json","state_url":"https://pith.science/pith/PPGZ3MSREXUNOK7BHWBRJP5IRR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PPGZ3MSREXUNOK7BHWBRJP5IRR/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":"2026-08-11T16:51:05Z","links":{"resolver":"https://pith.science/pith/PPGZ3MSREXUNOK7BHWBRJP5IRR","bundle":"https://pith.science/pith/PPGZ3MSREXUNOK7BHWBRJP5IRR/bundle.json","state":"https://pith.science/pith/PPGZ3MSREXUNOK7BHWBRJP5IRR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PPGZ3MSREXUNOK7BHWBRJP5IRR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:PPGZ3MSREXUNOK7BHWBRJP5IRR","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":"ac6ab65c55394d25b9fa26c8c7e4236cb830c1854f9cfcaeee8ca56b34224f25","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-08-06T06:36:07Z","title_canon_sha256":"8972575a7951978fa6d25dd008706d1e91451b5edc2ccc050d3020b03a301fec"},"schema_version":"1.0","source":{"id":"2008.02473","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.02473","created_at":"2026-07-05T02:22:05Z"},{"alias_kind":"arxiv_version","alias_value":"2008.02473v2","created_at":"2026-07-05T02:22:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.02473","created_at":"2026-07-05T02:22:05Z"},{"alias_kind":"pith_short_12","alias_value":"PPGZ3MSREXUN","created_at":"2026-07-05T02:22:05Z"},{"alias_kind":"pith_short_16","alias_value":"PPGZ3MSREXUNOK7B","created_at":"2026-07-05T02:22:05Z"},{"alias_kind":"pith_short_8","alias_value":"PPGZ3MSR","created_at":"2026-07-05T02:22:05Z"}],"graph_snapshots":[{"event_id":"sha256:0f90da85ac0c23115464450fc21953fe88a92a504938c102d5d76b92d73c1c99","target":"graph","created_at":"2026-07-05T02:22:05Z","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/2008.02473/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Axion-like particles (ALPs) rotate the linear polarization of photons through the ALP-photon coupling and convert the cosmic microwave background (CMB) $E$-mode to the $B$-mode. We derive the relation between the ALP dynamics and the rotation angle by assuming that the ALP $\\phi$ has a quadratic potential, $V=m^2\\phi^2/2$. We compute the current and future sensitivities of CMB observations to the ALP-photon coupling $g$, which can reach $g=4\\times 10^{-21}\\,\\mathrm{GeV}^{-1}$ for $10^{-32}\\,\\mathrm{eV}\\lesssim m\\lesssim 10^{-28}\\,\\mathrm{eV}$ and extensively exceed the other searches for any m","authors_text":"Hiromasa Nakatsuka, Kai Murai, Tomohiro Fujita, Yuto Minami","cross_cats":["hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-08-06T06:36:07Z","title":"Probing Axion-like Particles via CMB Polarization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.02473","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":"sha256:8cdd9eb517ae1b92de23c3a9acc8f178b57adb6af75715af0b1a21b053ccf3fb","target":"record","created_at":"2026-07-05T02:22:05Z","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":"ac6ab65c55394d25b9fa26c8c7e4236cb830c1854f9cfcaeee8ca56b34224f25","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-08-06T06:36:07Z","title_canon_sha256":"8972575a7951978fa6d25dd008706d1e91451b5edc2ccc050d3020b03a301fec"},"schema_version":"1.0","source":{"id":"2008.02473","kind":"arxiv","version":2}},"canonical_sha256":"7bcd9db25125e8d72be13d8314bfa88c77a818e40b00af3944e547ed583a7cf1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7bcd9db25125e8d72be13d8314bfa88c77a818e40b00af3944e547ed583a7cf1","first_computed_at":"2026-07-05T02:22:05.588827Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:22:05.588827Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GpvG0oyjeb2qfDEuVg3XnooBWC4dZqE/Wm9eZ5YimIWZ9dkXgGjgu9o2F3ho+YYCt+ytXH00pMlKo4gEoOJJDg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:22:05.589333Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.02473","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8cdd9eb517ae1b92de23c3a9acc8f178b57adb6af75715af0b1a21b053ccf3fb","sha256:0f90da85ac0c23115464450fc21953fe88a92a504938c102d5d76b92d73c1c99"],"state_sha256":"3ad0f03d3bbdc35a0d7822d1fe7b5090f9043c593bebbbfa4f6e617c63f639b7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vkK4VG0al442+dFuxXAckvCHz54e30o3a56Dh1MwJ252o1hvL0g8NPNJJ89KgvEW+JmTGBtTEmEFNQNLohkPDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T16:51:05.700155Z","bundle_sha256":"603e65773dd055a3b05fbd259fec4f355d860c318a376b1310fbf46c106817b6"}}