{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:RYZSSXYWPVECD2A4AI6SVIUU5W","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":"f4faef789ec9158e13db5261665e37797ad09fd004dafb9c902da6a3cd6e3981","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2012-11-05T18:00:23Z","title_canon_sha256":"93b16ba070459f6207edcc97ca9d6a5d86b8bde4e9175ec57db941de07b46bc1"},"schema_version":"1.0","source":{"id":"1211.0953","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.0953","created_at":"2026-05-18T01:53:25Z"},{"alias_kind":"arxiv_version","alias_value":"1211.0953v2","created_at":"2026-05-18T01:53:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.0953","created_at":"2026-05-18T01:53:25Z"},{"alias_kind":"pith_short_12","alias_value":"RYZSSXYWPVEC","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"RYZSSXYWPVECD2A4","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"RYZSSXYW","created_at":"2026-05-18T12:27:20Z"}],"graph_snapshots":[{"event_id":"sha256:d2aec02c4bd5f8f1a38160cfeb9d4b5b5782f504866506e326bf2194729063b7","target":"graph","created_at":"2026-05-18T01:53:25Z","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":"The numerical instability observed in the Electromagnetic-Particle-in-cell (EM-PIC) simulations with a plasma drifting with relativistic velocities is studied using both theory and computer simulations. We derive the numerical dispersion relation for a cold plasma drifting with a relativistic velocity and find an instability attributed to the coupling between the beam modes of the drifting plasma and the electromagnetic modes in the system. The characteristic pattern of the instability in Fourier space for various simulation setups and Maxwell Equation solvers are explored by solving the corre","authors_text":"Frank S. Tsung, Luis O. Silva, Peicheng Yu, Ricardo A. Fonseca, Samual F. Martins, Viktor K. Decyk, Warren B. Mori, Wei Lu, Xinlu Xu","cross_cats":["physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2012-11-05T18:00:23Z","title":"Numerical instability due to relativistic plasma drift in EM-PIC simulations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.0953","kind":"arxiv","version":2},"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":"sha256:089feed3e9086d45e4baa9117a161fdea28db36a1864c857b38facb703595458","target":"record","created_at":"2026-05-18T01:53:25Z","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":"f4faef789ec9158e13db5261665e37797ad09fd004dafb9c902da6a3cd6e3981","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2012-11-05T18:00:23Z","title_canon_sha256":"93b16ba070459f6207edcc97ca9d6a5d86b8bde4e9175ec57db941de07b46bc1"},"schema_version":"1.0","source":{"id":"1211.0953","kind":"arxiv","version":2}},"canonical_sha256":"8e33295f167d4821e81c023d2aa294edbc069324d45dd96d89a96cabe227e159","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8e33295f167d4821e81c023d2aa294edbc069324d45dd96d89a96cabe227e159","first_computed_at":"2026-05-18T01:53:25.698199Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:53:25.698199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3YFgeEAfyNXmS3DqtbT0+eiCsO545nyBCUWOI//TiV//ZWbdiiI4VUvPkLuc3PPZ9xiOLE+HtBF5Rwn0XvQqDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:53:25.698837Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.0953","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:089feed3e9086d45e4baa9117a161fdea28db36a1864c857b38facb703595458","sha256:d2aec02c4bd5f8f1a38160cfeb9d4b5b5782f504866506e326bf2194729063b7"],"state_sha256":"8b83cc90ae49776775026236dc78838f3463a65acd3ef0d6d4556397f83509fa"}