{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:YLUDUIQBMTXPJFR4WUZQVB7FIR","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":"e12b3f0ffed7c6f5a2429f0063ecec72cf0c4185d19353d8455a7ad5210a9039","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-07-28T16:54:39Z","title_canon_sha256":"4f7a97b579749e64a22d5ede3a413d1085e74f195e4e3105c720a7c703e00ee5"},"schema_version":"1.0","source":{"id":"1607.08533","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.08533","created_at":"2026-05-18T00:48:42Z"},{"alias_kind":"arxiv_version","alias_value":"1607.08533v3","created_at":"2026-05-18T00:48:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.08533","created_at":"2026-05-18T00:48:42Z"},{"alias_kind":"pith_short_12","alias_value":"YLUDUIQBMTXP","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_16","alias_value":"YLUDUIQBMTXPJFR4","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_8","alias_value":"YLUDUIQB","created_at":"2026-05-18T12:30:53Z"}],"graph_snapshots":[{"event_id":"sha256:649f0f0165513b44ffa07da12a92889ea4bd8e9b305507a1ba230b54b0c2ef3f","target":"graph","created_at":"2026-05-18T00:48:42Z","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":"We study the background conditions for a bounce uniquely driven by a single scalar field model with a generalized kinetic term $K(X)$, without any additional matter field. At the background level we impose the existence of two turning points where the derivative of the Hubble parameter $H$ changes sign and of a bounce point where the Hubble parameter vanishes. We find the conditions for $K(X)$ and the potential which ensure the above requirements. We then give the examples of two models constructed according to these conditions. One is based on a quadratic $K(X)$, and the other a $K(X)$ which ","authors_text":"Antonio Enea Romano","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-07-28T16:54:39Z","title":"General background conditions for K-bounce and adiabaticity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.08533","kind":"arxiv","version":3},"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:ae0e3b251197c4c4621122adb5561bfc84cbf5260c6fc7d6a7a4fa3686455c01","target":"record","created_at":"2026-05-18T00:48:42Z","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":"e12b3f0ffed7c6f5a2429f0063ecec72cf0c4185d19353d8455a7ad5210a9039","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2016-07-28T16:54:39Z","title_canon_sha256":"4f7a97b579749e64a22d5ede3a413d1085e74f195e4e3105c720a7c703e00ee5"},"schema_version":"1.0","source":{"id":"1607.08533","kind":"arxiv","version":3}},"canonical_sha256":"c2e83a220164eef4963cb5330a87e54442e2e802e7de044a5a46d6caec57ef52","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c2e83a220164eef4963cb5330a87e54442e2e802e7de044a5a46d6caec57ef52","first_computed_at":"2026-05-18T00:48:42.486444Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:48:42.486444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CxWEtunX2FjCTdt8MTwJ5bvmqxH/ZRjn9Xv3PgT0eun/rCQZBS/kG1Eu+hdOlmg/7DRnpAcs+f89C3Crbdh+Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:48:42.487040Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.08533","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ae0e3b251197c4c4621122adb5561bfc84cbf5260c6fc7d6a7a4fa3686455c01","sha256:649f0f0165513b44ffa07da12a92889ea4bd8e9b305507a1ba230b54b0c2ef3f"],"state_sha256":"1bbb9473bec5e2f1e175de3ac1379da20595465e735ee4984b29b9bbb3d97e20"}