{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:U3XPFNE2VM7PEVAZRAFQ6OFCBK","short_pith_number":"pith:U3XPFNE2","canonical_record":{"source":{"id":"1302.3977","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-02-16T16:43:15Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"e3801e53f1585bef17812a02a95840643d875663cc22586d32eec49d55315cbc","abstract_canon_sha256":"04c5df0e23aaddc58216631269a58ab5dbf0704d45e978db0b0064544315b21b"},"schema_version":"1.0"},"canonical_sha256":"a6eef2b49aab3ef25419880b0f38a20a9e42f642a293a49da908edcedc8f884c","source":{"kind":"arxiv","id":"1302.3977","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.3977","created_at":"2026-05-18T03:33:24Z"},{"alias_kind":"arxiv_version","alias_value":"1302.3977v1","created_at":"2026-05-18T03:33:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.3977","created_at":"2026-05-18T03:33:24Z"},{"alias_kind":"pith_short_12","alias_value":"U3XPFNE2VM7P","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"U3XPFNE2VM7PEVAZ","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"U3XPFNE2","created_at":"2026-05-18T12:28:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:U3XPFNE2VM7PEVAZRAFQ6OFCBK","target":"record","payload":{"canonical_record":{"source":{"id":"1302.3977","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-02-16T16:43:15Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"e3801e53f1585bef17812a02a95840643d875663cc22586d32eec49d55315cbc","abstract_canon_sha256":"04c5df0e23aaddc58216631269a58ab5dbf0704d45e978db0b0064544315b21b"},"schema_version":"1.0"},"canonical_sha256":"a6eef2b49aab3ef25419880b0f38a20a9e42f642a293a49da908edcedc8f884c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:33:24.709950Z","signature_b64":"0E1KN+QKfKdLa/C6LYnnooRy8vxOyoTQ5vEco2zplj8ULSci8jy7RrnT78SsEKQ6JFVUK7GAqmcfKveEEKZxCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a6eef2b49aab3ef25419880b0f38a20a9e42f642a293a49da908edcedc8f884c","last_reissued_at":"2026-05-18T03:33:24.709153Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:33:24.709153Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1302.3977","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":"2026-05-18T03:33:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IxK9bt9UtkJ8pnsHiEd4me9Zwzmob3u2TfFQvXp9UMlYERDqzWnx8aRp0mjxGcSpdrdiEq0PMpLZza7h+CB9Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T17:48:57.751367Z"},"content_sha256":"46732ee310abd9944ed6fedb569ab5d1abfcce273359027bd920269336bb8bdc","schema_version":"1.0","event_id":"sha256:46732ee310abd9944ed6fedb569ab5d1abfcce273359027bd920269336bb8bdc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:U3XPFNE2VM7PEVAZRAFQ6OFCBK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Inflation in Higher Dimensional Gauss-Bonnet Cosmology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-th"],"primary_cat":"gr-qc","authors_text":"Debajyoti Choudhury, Isha Pahwa, T. R. Seshadri","submitted_at":"2013-02-16T16:43:15Z","abstract_excerpt":"A Gauss-Bonnet term naturally appears in the action for gravity when one considers the existence of space time with dimensions more than 1+3. A variety of inflationary models can be obtained within such a framework, once the scale factor for the hidden dimension(s) is not constrained to be the same as that of the visible ones. In particular, the need for an adhoc inflaton field is eliminated. The phase space has a rich structure with different types of solutions, both stable and unstable. For a large class of solutions, the scale factors rapidly approach an asymptotic exponential form. Further"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.3977","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":""},"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":"2026-05-18T03:33:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5IG0R3gb5q7szBT5I5qbWL6+etTSKP0aUNVxFckhbCGyEHY/fZWBVLvnYBTukYP/Hu51fiMcE7tlI41MwSZKAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T17:48:57.751799Z"},"content_sha256":"db4076bdfc0682ef1d44b9c3114094207d30e0a630a8c87312e9b595695dde6e","schema_version":"1.0","event_id":"sha256:db4076bdfc0682ef1d44b9c3114094207d30e0a630a8c87312e9b595695dde6e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U3XPFNE2VM7PEVAZRAFQ6OFCBK/bundle.json","state_url":"https://pith.science/pith/U3XPFNE2VM7PEVAZRAFQ6OFCBK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U3XPFNE2VM7PEVAZRAFQ6OFCBK/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":"2026-05-30T17:48:57Z","links":{"resolver":"https://pith.science/pith/U3XPFNE2VM7PEVAZRAFQ6OFCBK","bundle":"https://pith.science/pith/U3XPFNE2VM7PEVAZRAFQ6OFCBK/bundle.json","state":"https://pith.science/pith/U3XPFNE2VM7PEVAZRAFQ6OFCBK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U3XPFNE2VM7PEVAZRAFQ6OFCBK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:U3XPFNE2VM7PEVAZRAFQ6OFCBK","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":"04c5df0e23aaddc58216631269a58ab5dbf0704d45e978db0b0064544315b21b","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-02-16T16:43:15Z","title_canon_sha256":"e3801e53f1585bef17812a02a95840643d875663cc22586d32eec49d55315cbc"},"schema_version":"1.0","source":{"id":"1302.3977","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.3977","created_at":"2026-05-18T03:33:24Z"},{"alias_kind":"arxiv_version","alias_value":"1302.3977v1","created_at":"2026-05-18T03:33:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.3977","created_at":"2026-05-18T03:33:24Z"},{"alias_kind":"pith_short_12","alias_value":"U3XPFNE2VM7P","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"U3XPFNE2VM7PEVAZ","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"U3XPFNE2","created_at":"2026-05-18T12:28:02Z"}],"graph_snapshots":[{"event_id":"sha256:db4076bdfc0682ef1d44b9c3114094207d30e0a630a8c87312e9b595695dde6e","target":"graph","created_at":"2026-05-18T03:33:24Z","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":"A Gauss-Bonnet term naturally appears in the action for gravity when one considers the existence of space time with dimensions more than 1+3. A variety of inflationary models can be obtained within such a framework, once the scale factor for the hidden dimension(s) is not constrained to be the same as that of the visible ones. In particular, the need for an adhoc inflaton field is eliminated. The phase space has a rich structure with different types of solutions, both stable and unstable. For a large class of solutions, the scale factors rapidly approach an asymptotic exponential form. Further","authors_text":"Debajyoti Choudhury, Isha Pahwa, T. R. Seshadri","cross_cats":["astro-ph.CO","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-02-16T16:43:15Z","title":"Inflation in Higher Dimensional Gauss-Bonnet Cosmology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.3977","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":"sha256:46732ee310abd9944ed6fedb569ab5d1abfcce273359027bd920269336bb8bdc","target":"record","created_at":"2026-05-18T03:33:24Z","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":"04c5df0e23aaddc58216631269a58ab5dbf0704d45e978db0b0064544315b21b","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-02-16T16:43:15Z","title_canon_sha256":"e3801e53f1585bef17812a02a95840643d875663cc22586d32eec49d55315cbc"},"schema_version":"1.0","source":{"id":"1302.3977","kind":"arxiv","version":1}},"canonical_sha256":"a6eef2b49aab3ef25419880b0f38a20a9e42f642a293a49da908edcedc8f884c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a6eef2b49aab3ef25419880b0f38a20a9e42f642a293a49da908edcedc8f884c","first_computed_at":"2026-05-18T03:33:24.709153Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:33:24.709153Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0E1KN+QKfKdLa/C6LYnnooRy8vxOyoTQ5vEco2zplj8ULSci8jy7RrnT78SsEKQ6JFVUK7GAqmcfKveEEKZxCw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:33:24.709950Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.3977","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:46732ee310abd9944ed6fedb569ab5d1abfcce273359027bd920269336bb8bdc","sha256:db4076bdfc0682ef1d44b9c3114094207d30e0a630a8c87312e9b595695dde6e"],"state_sha256":"5b9fb1d34c476af5c5a61bcf6893e65e2ea95c58fd032ac68be326ca2c719ffb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8UA5RtbFEVKcGveSIiS5O0r6/3GB9bH+DN+eYLYv/pNR6JE3xvmzAaY4w7JNqkQd03RNTW+FEztK5xj/jKkGDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T17:48:57.754366Z","bundle_sha256":"97d128b3352481b2d7fcb89cc353854f17199c69bb4e4dd5c90863a9e09dcc4b"}}