{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:65RN6NJ7XZLVSVRINLLGSTV2AW","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":"33c6500d6f7134b2b21780d5aae9935d0d488f1888cfbb225d5e2bcbfba1e1a4","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2025-05-18T18:40:12Z","title_canon_sha256":"c743df24f7e23c7a4b1943c3e33a1601f24f225f84af2c15f04138ac153efeac"},"schema_version":"1.0","source":{"id":"2505.12517","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.12517","created_at":"2026-07-05T11:05:05Z"},{"alias_kind":"arxiv_version","alias_value":"2505.12517v1","created_at":"2026-07-05T11:05:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.12517","created_at":"2026-07-05T11:05:05Z"},{"alias_kind":"pith_short_12","alias_value":"65RN6NJ7XZLV","created_at":"2026-07-05T11:05:05Z"},{"alias_kind":"pith_short_16","alias_value":"65RN6NJ7XZLVSVRI","created_at":"2026-07-05T11:05:05Z"},{"alias_kind":"pith_short_8","alias_value":"65RN6NJ7","created_at":"2026-07-05T11:05:05Z"}],"graph_snapshots":[{"event_id":"sha256:eb5fef97b1ebe5edc14244187e71ec7f70017ddf58261d44f5371128b33a6c93","target":"graph","created_at":"2026-07-05T11:05:05Z","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/2505.12517/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Modeling nonlinear pulse propagation in multimode fibers is challenging due to the large number of interacting modes and the resulting spatiotemporal complexity. Traditional optimization methods often become intractable, while learning-based approaches, such as recurrent neural networks, suffer from high computational cost and long inference times. We present a U-Net architecture as a fast, accurate surrogate for modeling nonlinear pulse propagation in multimode fibers. This approach overcomes the intractability of traditional methods while offering low computational cost. Trained on data gene","authors_text":"Bahad{\\i}r Utku Kesgin, Bora \\c{C}arp{\\i}nl{\\i}o\\u{g}lu, U\\u{g}ur Te\\u{g}in","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2025-05-18T18:40:12Z","title":"Real-time surrogate modeling of nonlinear pulse evolution in multimode fibers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.12517","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":"sha256:649c61f5ba451c479f4036d55e361d2c19f76f99699c467d03ce039df54369fc","target":"record","created_at":"2026-07-05T11:05:05Z","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":"33c6500d6f7134b2b21780d5aae9935d0d488f1888cfbb225d5e2bcbfba1e1a4","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2025-05-18T18:40:12Z","title_canon_sha256":"c743df24f7e23c7a4b1943c3e33a1601f24f225f84af2c15f04138ac153efeac"},"schema_version":"1.0","source":{"id":"2505.12517","kind":"arxiv","version":1}},"canonical_sha256":"f762df353fbe575956286ad6694eba05ad4de302a21fce7c0fc251e75e2da586","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f762df353fbe575956286ad6694eba05ad4de302a21fce7c0fc251e75e2da586","first_computed_at":"2026-07-05T11:05:05.628531Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:05:05.628531Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uGEV7HYeSD6/EBA+u9uqVzy7cd5g9Giwmhqgi0oTVrdPwf0isrksGhDTgwQaw0SALjqxtQlYi7JLT7glawx0Bg==","signature_status":"signed_v1","signed_at":"2026-07-05T11:05:05.629048Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.12517","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:649c61f5ba451c479f4036d55e361d2c19f76f99699c467d03ce039df54369fc","sha256:eb5fef97b1ebe5edc14244187e71ec7f70017ddf58261d44f5371128b33a6c93"],"state_sha256":"62bd3eab40a0173e38dd72752096a42cf9efb11f94e821cb5ea38cf80c607768"}