{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:NVAOXUJ7WMIPNGOXXOCZB4W2NS","short_pith_number":"pith:NVAOXUJ7","canonical_record":{"source":{"id":"2608.02498","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-08-03T17:02:19Z","cross_cats_sorted":[],"title_canon_sha256":"4cd5a07a3ce51770e6ea83dfacd58148d1698163ab5b54c837abb14601f1b8a7","abstract_canon_sha256":"bc217e4bab5c8119ee7674bf69ff7c2df5d2f75dc606aecba03e1620d6a655e0"},"schema_version":"1.0"},"canonical_sha256":"6d40ebd13fb310f699d7bb8590f2da6c8b45e2317eb81d1ad4c3b581619dc447","source":{"kind":"arxiv","id":"2608.02498","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.02498","created_at":"2026-08-04T02:43:48Z"},{"alias_kind":"arxiv_version","alias_value":"2608.02498v1","created_at":"2026-08-04T02:43:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.02498","created_at":"2026-08-04T02:43:48Z"},{"alias_kind":"pith_short_12","alias_value":"NVAOXUJ7WMIP","created_at":"2026-08-04T02:43:48Z"},{"alias_kind":"pith_short_16","alias_value":"NVAOXUJ7WMIPNGOX","created_at":"2026-08-04T02:43:48Z"},{"alias_kind":"pith_short_8","alias_value":"NVAOXUJ7","created_at":"2026-08-04T02:43:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:NVAOXUJ7WMIPNGOXXOCZB4W2NS","target":"record","payload":{"canonical_record":{"source":{"id":"2608.02498","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-08-03T17:02:19Z","cross_cats_sorted":[],"title_canon_sha256":"4cd5a07a3ce51770e6ea83dfacd58148d1698163ab5b54c837abb14601f1b8a7","abstract_canon_sha256":"bc217e4bab5c8119ee7674bf69ff7c2df5d2f75dc606aecba03e1620d6a655e0"},"schema_version":"1.0"},"canonical_sha256":"6d40ebd13fb310f699d7bb8590f2da6c8b45e2317eb81d1ad4c3b581619dc447","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-04T02:43:48.284569Z","signature_b64":"gBIT9BHCbJu1AA7izjeqummrV5OKkz1GBJXPGJ7nCy37g8IQIXWozg0pRSCil4M+5xrTB1jyVuK3AmijimosDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6d40ebd13fb310f699d7bb8590f2da6c8b45e2317eb81d1ad4c3b581619dc447","last_reissued_at":"2026-08-04T02:43:48.282135Z","signature_status":"signed_v1","first_computed_at":"2026-08-04T02:43:48.282135Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2608.02498","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":"2026-08-04T02:43:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RhcDBVg1ue2Pxu2f5tLoGyWqNbzDaP5z2Cfgxmwyh874Usm/Eo4OwkUqv2Zso1CHFfO4wp2lqPGFxvOO3PJQCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T14:53:06.208181Z"},"content_sha256":"794abeaec9682e603c59257bd61fb7b0166142697b4da98e90b82abba788a0ee","schema_version":"1.0","event_id":"sha256:794abeaec9682e603c59257bd61fb7b0166142697b4da98e90b82abba788a0ee"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:NVAOXUJ7WMIPNGOXXOCZB4W2NS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Axion Inflation: Perturbative control in the strong backreaction regime","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Alexandros Papageorgiou, Marco Peloso, Stefan Sandner, Valerie Domcke","submitted_at":"2026-08-03T17:02:19Z","abstract_excerpt":"We study the strong backreaction regime in axion inflation, in which the friction from Abelian gauge fields generated via the pseudo-scalar interaction $\\frac{\\beta}{4 M_p} \\phi F {\\tilde F}$ is comparable to Hubble friction. The non-linear dynamics associated with the gauge fields render this regime phenomenologically particularly interesting, but also notoriously difficult to study with perturbative methods. Quantifying the perturbative control through the direct impact on the spectral backreaction using (i) a first-order gradient-expansion formalism including axion gradients, and (ii) a one"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.02498","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/2608.02498/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":"2026-08-04T02:43:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y0s0wndb+WeKdSRN31uvpudLAJ69zyfLeRbs0zZMUpWcuT8rz4wXcHk+XuV0BhAagyf8w30LLc2Q38YtgjT6DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T14:53:06.208686Z"},"content_sha256":"fb5752df0089536a531ba5dfa9dc74905ca882cf9369e3e4a6f3dcff274d2212","schema_version":"1.0","event_id":"sha256:fb5752df0089536a531ba5dfa9dc74905ca882cf9369e3e4a6f3dcff274d2212"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NVAOXUJ7WMIPNGOXXOCZB4W2NS/bundle.json","state_url":"https://pith.science/pith/NVAOXUJ7WMIPNGOXXOCZB4W2NS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NVAOXUJ7WMIPNGOXXOCZB4W2NS/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":"2026-08-04T14:53:06Z","links":{"resolver":"https://pith.science/pith/NVAOXUJ7WMIPNGOXXOCZB4W2NS","bundle":"https://pith.science/pith/NVAOXUJ7WMIPNGOXXOCZB4W2NS/bundle.json","state":"https://pith.science/pith/NVAOXUJ7WMIPNGOXXOCZB4W2NS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NVAOXUJ7WMIPNGOXXOCZB4W2NS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:NVAOXUJ7WMIPNGOXXOCZB4W2NS","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":"bc217e4bab5c8119ee7674bf69ff7c2df5d2f75dc606aecba03e1620d6a655e0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-08-03T17:02:19Z","title_canon_sha256":"4cd5a07a3ce51770e6ea83dfacd58148d1698163ab5b54c837abb14601f1b8a7"},"schema_version":"1.0","source":{"id":"2608.02498","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.02498","created_at":"2026-08-04T02:43:48Z"},{"alias_kind":"arxiv_version","alias_value":"2608.02498v1","created_at":"2026-08-04T02:43:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.02498","created_at":"2026-08-04T02:43:48Z"},{"alias_kind":"pith_short_12","alias_value":"NVAOXUJ7WMIP","created_at":"2026-08-04T02:43:48Z"},{"alias_kind":"pith_short_16","alias_value":"NVAOXUJ7WMIPNGOX","created_at":"2026-08-04T02:43:48Z"},{"alias_kind":"pith_short_8","alias_value":"NVAOXUJ7","created_at":"2026-08-04T02:43:48Z"}],"graph_snapshots":[{"event_id":"sha256:fb5752df0089536a531ba5dfa9dc74905ca882cf9369e3e4a6f3dcff274d2212","target":"graph","created_at":"2026-08-04T02:43:48Z","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/2608.02498/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the strong backreaction regime in axion inflation, in which the friction from Abelian gauge fields generated via the pseudo-scalar interaction $\\frac{\\beta}{4 M_p} \\phi F {\\tilde F}$ is comparable to Hubble friction. The non-linear dynamics associated with the gauge fields render this regime phenomenologically particularly interesting, but also notoriously difficult to study with perturbative methods. Quantifying the perturbative control through the direct impact on the spectral backreaction using (i) a first-order gradient-expansion formalism including axion gradients, and (ii) a one","authors_text":"Alexandros Papageorgiou, Marco Peloso, Stefan Sandner, Valerie Domcke","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-08-03T17:02:19Z","title":"Axion Inflation: Perturbative control in the strong backreaction regime"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.02498","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":"sha256:794abeaec9682e603c59257bd61fb7b0166142697b4da98e90b82abba788a0ee","target":"record","created_at":"2026-08-04T02:43:48Z","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":"bc217e4bab5c8119ee7674bf69ff7c2df5d2f75dc606aecba03e1620d6a655e0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-08-03T17:02:19Z","title_canon_sha256":"4cd5a07a3ce51770e6ea83dfacd58148d1698163ab5b54c837abb14601f1b8a7"},"schema_version":"1.0","source":{"id":"2608.02498","kind":"arxiv","version":1}},"canonical_sha256":"6d40ebd13fb310f699d7bb8590f2da6c8b45e2317eb81d1ad4c3b581619dc447","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6d40ebd13fb310f699d7bb8590f2da6c8b45e2317eb81d1ad4c3b581619dc447","first_computed_at":"2026-08-04T02:43:48.282135Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-04T02:43:48.282135Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gBIT9BHCbJu1AA7izjeqummrV5OKkz1GBJXPGJ7nCy37g8IQIXWozg0pRSCil4M+5xrTB1jyVuK3AmijimosDA==","signature_status":"signed_v1","signed_at":"2026-08-04T02:43:48.284569Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.02498","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:794abeaec9682e603c59257bd61fb7b0166142697b4da98e90b82abba788a0ee","sha256:fb5752df0089536a531ba5dfa9dc74905ca882cf9369e3e4a6f3dcff274d2212"],"state_sha256":"b3cae15b71f23e558081dd7f71a5ae9e94e403a3e16cc81888e3c1e58c3e6470"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FSx+tPLUVuESjoM74lCyz35YCZakNyGe4i2HjIcMllAhicC+On8C3kRdINB6k/UxfZQHyCUCk+QwI4PZCiOHCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T14:53:06.212227Z","bundle_sha256":"61bd51952bcc660c791da4034aa2a6b58940819f310c30c63606986abb6e0aba"}}