{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:UD5IPKBYEJGCRVSAKNKLQQOFND","short_pith_number":"pith:UD5IPKBY","canonical_record":{"source":{"id":"2607.29683","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-31T17:59:05Z","cross_cats_sorted":[],"title_canon_sha256":"6f9514144ee7ced5b9254a72d1042cd57fa5fd47fcca27fd38020b1a457e4ab2","abstract_canon_sha256":"63aaa3a23d0d1a4914d6bcff8cff8099e2e0454284c7a3e820bed33901ba2669"},"schema_version":"1.0"},"canonical_sha256":"a0fa87a838224c28d6405354b841c568ec4b1200de5f03af57dd95a3e851d1a5","source":{"kind":"arxiv","id":"2607.29683","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.29683","created_at":"2026-08-03T01:41:44Z"},{"alias_kind":"arxiv_version","alias_value":"2607.29683v1","created_at":"2026-08-03T01:41:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.29683","created_at":"2026-08-03T01:41:44Z"},{"alias_kind":"pith_short_12","alias_value":"UD5IPKBYEJGC","created_at":"2026-08-03T01:41:44Z"},{"alias_kind":"pith_short_16","alias_value":"UD5IPKBYEJGCRVSA","created_at":"2026-08-03T01:41:44Z"},{"alias_kind":"pith_short_8","alias_value":"UD5IPKBY","created_at":"2026-08-03T01:41:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:UD5IPKBYEJGCRVSAKNKLQQOFND","target":"record","payload":{"canonical_record":{"source":{"id":"2607.29683","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-31T17:59:05Z","cross_cats_sorted":[],"title_canon_sha256":"6f9514144ee7ced5b9254a72d1042cd57fa5fd47fcca27fd38020b1a457e4ab2","abstract_canon_sha256":"63aaa3a23d0d1a4914d6bcff8cff8099e2e0454284c7a3e820bed33901ba2669"},"schema_version":"1.0"},"canonical_sha256":"a0fa87a838224c28d6405354b841c568ec4b1200de5f03af57dd95a3e851d1a5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-03T01:41:44.416219Z","signature_b64":"yHl2Dp6rPxpj3chNHE5aZE3UzbsGsToF4swiToAHiwDF0E+Abx1Hxw6GvP4JhM9baUF5BO1ofP7M3xVqFh6gCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a0fa87a838224c28d6405354b841c568ec4b1200de5f03af57dd95a3e851d1a5","last_reissued_at":"2026-08-03T01:41:44.414541Z","signature_status":"signed_v1","first_computed_at":"2026-08-03T01:41:44.414541Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.29683","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-08-03T01:41:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CFlqq9wFpg1OopO/VNkJ7a/twa+a9u7xSyTj6tPvDKQta5YOgNb118v/vI+p6UAgwRH4tjJgBikuIyzPYBOLCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T03:28:04.072315Z"},"content_sha256":"ad386a94836c22560ca416ebaa0d0207dfdc8178914e1955cc4b38fc315ed992","schema_version":"1.0","event_id":"sha256:ad386a94836c22560ca416ebaa0d0207dfdc8178914e1955cc4b38fc315ed992"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:UD5IPKBYEJGCRVSAKNKLQQOFND","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Emulating the nonlinear effects of modified gravity on the matter power spectrum for reconstruction","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Gong-Bo Zhao, Kazuya Koyama, Lanyang Yi, Qi Xiong","submitted_at":"2026-07-31T17:59:05Z","abstract_excerpt":"Including nonlinear information from modified gravity (MG) brings more constraining power to the model-independent reconstruction of MG functions. However, the calculation of the nonlinear matter power spectrum with MGCAMB+ReACT is expensive in repeated likelihood evaluations, which limits the exploration of the high-dimensional parameter space. In this work, we construct a neural-network emulator for the nonlinear correction $R_{\\mathrm{MG}}(k,z)=P_{\\mathrm{MG}}^{\\mathrm{NL}}(k,z)/P_{\\mathrm{MG}}^{\\mathrm{L}}(k,z)$, which is trained with \\texttt{CosmoPower} on approximately $9\\times10^5$ samp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.29683","kind":"arxiv","version":1},"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/2607.29683/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":"2026-08-03T01:41:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L75xkUdNgTjGwvGd1nh1eiAhnFKDfthIP0l/dOd8wnDCG/mBm5O+/oTJ1TB9Z1WNjiLfNbXdBdTSQx27bojbAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T03:28:04.072822Z"},"content_sha256":"0417b2f147e93727d713aea1550ca1a64dbf59b70b25f8f75cfd1030b25f97ab","schema_version":"1.0","event_id":"sha256:0417b2f147e93727d713aea1550ca1a64dbf59b70b25f8f75cfd1030b25f97ab"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UD5IPKBYEJGCRVSAKNKLQQOFND/bundle.json","state_url":"https://pith.science/pith/UD5IPKBYEJGCRVSAKNKLQQOFND/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UD5IPKBYEJGCRVSAKNKLQQOFND/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":"2026-08-04T03:28:04Z","links":{"resolver":"https://pith.science/pith/UD5IPKBYEJGCRVSAKNKLQQOFND","bundle":"https://pith.science/pith/UD5IPKBYEJGCRVSAKNKLQQOFND/bundle.json","state":"https://pith.science/pith/UD5IPKBYEJGCRVSAKNKLQQOFND/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UD5IPKBYEJGCRVSAKNKLQQOFND/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:UD5IPKBYEJGCRVSAKNKLQQOFND","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":"63aaa3a23d0d1a4914d6bcff8cff8099e2e0454284c7a3e820bed33901ba2669","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-31T17:59:05Z","title_canon_sha256":"6f9514144ee7ced5b9254a72d1042cd57fa5fd47fcca27fd38020b1a457e4ab2"},"schema_version":"1.0","source":{"id":"2607.29683","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.29683","created_at":"2026-08-03T01:41:44Z"},{"alias_kind":"arxiv_version","alias_value":"2607.29683v1","created_at":"2026-08-03T01:41:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.29683","created_at":"2026-08-03T01:41:44Z"},{"alias_kind":"pith_short_12","alias_value":"UD5IPKBYEJGC","created_at":"2026-08-03T01:41:44Z"},{"alias_kind":"pith_short_16","alias_value":"UD5IPKBYEJGCRVSA","created_at":"2026-08-03T01:41:44Z"},{"alias_kind":"pith_short_8","alias_value":"UD5IPKBY","created_at":"2026-08-03T01:41:44Z"}],"graph_snapshots":[{"event_id":"sha256:0417b2f147e93727d713aea1550ca1a64dbf59b70b25f8f75cfd1030b25f97ab","target":"graph","created_at":"2026-08-03T01:41:44Z","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/2607.29683/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Including nonlinear information from modified gravity (MG) brings more constraining power to the model-independent reconstruction of MG functions. However, the calculation of the nonlinear matter power spectrum with MGCAMB+ReACT is expensive in repeated likelihood evaluations, which limits the exploration of the high-dimensional parameter space. In this work, we construct a neural-network emulator for the nonlinear correction $R_{\\mathrm{MG}}(k,z)=P_{\\mathrm{MG}}^{\\mathrm{NL}}(k,z)/P_{\\mathrm{MG}}^{\\mathrm{L}}(k,z)$, which is trained with \\texttt{CosmoPower} on approximately $9\\times10^5$ samp","authors_text":"Gong-Bo Zhao, Kazuya Koyama, Lanyang Yi, Qi Xiong","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-31T17:59:05Z","title":"Emulating the nonlinear effects of modified gravity on the matter power spectrum for reconstruction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.29683","kind":"arxiv","version":1},"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:ad386a94836c22560ca416ebaa0d0207dfdc8178914e1955cc4b38fc315ed992","target":"record","created_at":"2026-08-03T01:41:44Z","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":"63aaa3a23d0d1a4914d6bcff8cff8099e2e0454284c7a3e820bed33901ba2669","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-31T17:59:05Z","title_canon_sha256":"6f9514144ee7ced5b9254a72d1042cd57fa5fd47fcca27fd38020b1a457e4ab2"},"schema_version":"1.0","source":{"id":"2607.29683","kind":"arxiv","version":1}},"canonical_sha256":"a0fa87a838224c28d6405354b841c568ec4b1200de5f03af57dd95a3e851d1a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a0fa87a838224c28d6405354b841c568ec4b1200de5f03af57dd95a3e851d1a5","first_computed_at":"2026-08-03T01:41:44.414541Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-03T01:41:44.414541Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yHl2Dp6rPxpj3chNHE5aZE3UzbsGsToF4swiToAHiwDF0E+Abx1Hxw6GvP4JhM9baUF5BO1ofP7M3xVqFh6gCg==","signature_status":"signed_v1","signed_at":"2026-08-03T01:41:44.416219Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.29683","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ad386a94836c22560ca416ebaa0d0207dfdc8178914e1955cc4b38fc315ed992","sha256:0417b2f147e93727d713aea1550ca1a64dbf59b70b25f8f75cfd1030b25f97ab"],"state_sha256":"b0220508efc41be2b9be4e38762a40f657190c84b40f89b31a7c71e1413937eb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I1/tBOgrMPsYF+RbuG16y9c98lAfywCAH4Sx/0lhaIE3K/i8dw8fjs+HtLbe9FpgZrhz1s7zissU10U5e/QzAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T03:28:04.076453Z","bundle_sha256":"257f1e703e4f0d1704a820e99efd601d7c360833f5be7118ed258f33a5d4f2d1"}}