{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:O3RMSLLOXGY7PTVIIXDS47ZGSI","short_pith_number":"pith:O3RMSLLO","canonical_record":{"source":{"id":"1407.0272","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2014-07-01T15:11:27Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"2cebeeed064c257ca427dd9e85cf4375ea43e4f03834972ec4203552edd587b2","abstract_canon_sha256":"da9f3c71fa589809a6d21638aff66a234fecfc88cfd4f3117335c0c912dd5327"},"schema_version":"1.0"},"canonical_sha256":"76e2c92d6eb9b1f7cea845c72e7f26923e28aed9932c7c073b18c7d64d1a1614","source":{"kind":"arxiv","id":"1407.0272","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.0272","created_at":"2026-05-18T02:04:11Z"},{"alias_kind":"arxiv_version","alias_value":"1407.0272v2","created_at":"2026-05-18T02:04:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.0272","created_at":"2026-05-18T02:04:11Z"},{"alias_kind":"pith_short_12","alias_value":"O3RMSLLOXGY7","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"O3RMSLLOXGY7PTVI","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"O3RMSLLO","created_at":"2026-05-18T12:28:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:O3RMSLLOXGY7PTVIIXDS47ZGSI","target":"record","payload":{"canonical_record":{"source":{"id":"1407.0272","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2014-07-01T15:11:27Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"2cebeeed064c257ca427dd9e85cf4375ea43e4f03834972ec4203552edd587b2","abstract_canon_sha256":"da9f3c71fa589809a6d21638aff66a234fecfc88cfd4f3117335c0c912dd5327"},"schema_version":"1.0"},"canonical_sha256":"76e2c92d6eb9b1f7cea845c72e7f26923e28aed9932c7c073b18c7d64d1a1614","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:04:11.048865Z","signature_b64":"9LT+f2hWevCsj/+TOn8MRBTKdhVhOFhCTgcazHWhcFsMoZ1x8Oi7HY0zsSoz11yjHsbxz7eV1qAW5yUngHH1Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"76e2c92d6eb9b1f7cea845c72e7f26923e28aed9932c7c073b18c7d64d1a1614","last_reissued_at":"2026-05-18T02:04:11.048059Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:04:11.048059Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.0272","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:04:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i+3dNTaCyRW+5qoVtzfMAu+2rnzomBWz3h0AExKRaL+3vUlNdOiyxU9ChMYFHx6AHk9iPdUJcpGFWgAOaiU9AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T19:00:07.593094Z"},"content_sha256":"e89c006c2fa53e03c65d94879c05450f0a1dbb2c6468846fcbcf34583a702a16","schema_version":"1.0","event_id":"sha256:e89c006c2fa53e03c65d94879c05450f0a1dbb2c6468846fcbcf34583a702a16"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:O3RMSLLOXGY7PTVIIXDS47ZGSI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Elimination of the numerical Cerenkov instability for spectral EM-PIC codes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"physics.plasm-ph","authors_text":"1649-026, 3) ((1) Department of Electrical Engineering, 6), Astronomy, Beijing 100084, CA 90095, California, China (3) Department of Physics, F. Fiuza (4), Frank S. Tsung (3), Jorge Vieira (5), Lisbon, Livermore, Los Angeles, Luis O. Silva (5), Peicheng Yu (1), Portugal), Portugal (6) ISCTE - Instituto Universit\\'ario de Lisboa, Ricardo A. Fonseca (5, Tsinghua University, University of California Los Angeles, USA (2) Department of Engineering Physics, USA (4) Lawrence Livermore National Laboratory, USA (5) Instituto Superior T\\'ecnico, Viktor K. Decyk (3), Warren B. Mori (1, Wei Lu (2), Xinlu Xu (2)","submitted_at":"2014-07-01T15:11:27Z","abstract_excerpt":"When using an electromagnetic particle-in-cell (EM-PIC) code to simulate a relativistically drifting plasma, a violent numerical instability known as the numerical Cerenkov instability (NCI) occurs. The NCI is due to the unphysical coupling of electromagnetic waves on a grid to wave-particle resonances, including aliased resonances, i.e., $\\omega + 2\\pi\\mu/\\Delta t=(k_1+ 2\\pi\\nu_1/\\Delta x_1)v_0$, where $\\mu$ and $\\nu_1$ refer to the time and space aliases and the plasma is drifting relativistically at velocity $v_0$ in the $\\hat{1}$-direction. Recent studies have shown that an EM-PIC code whi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.0272","kind":"arxiv","version":2},"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":"2026-05-18T02:04:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hnVAWu8h14TItoDTwlhu3+g4x9MjccMFysG4oncppUFTMIC9qjINxfVun3+OS032cMbHtnS5UaA4jHPv9MN/AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T19:00:07.593461Z"},"content_sha256":"77d7bf5b4b7699c2dc434fa790ea18ea8300e3668fc7d20dbcc873b07f6ca862","schema_version":"1.0","event_id":"sha256:77d7bf5b4b7699c2dc434fa790ea18ea8300e3668fc7d20dbcc873b07f6ca862"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O3RMSLLOXGY7PTVIIXDS47ZGSI/bundle.json","state_url":"https://pith.science/pith/O3RMSLLOXGY7PTVIIXDS47ZGSI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O3RMSLLOXGY7PTVIIXDS47ZGSI/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":"2026-06-01T19:00:07Z","links":{"resolver":"https://pith.science/pith/O3RMSLLOXGY7PTVIIXDS47ZGSI","bundle":"https://pith.science/pith/O3RMSLLOXGY7PTVIIXDS47ZGSI/bundle.json","state":"https://pith.science/pith/O3RMSLLOXGY7PTVIIXDS47ZGSI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O3RMSLLOXGY7PTVIIXDS47ZGSI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:O3RMSLLOXGY7PTVIIXDS47ZGSI","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":"da9f3c71fa589809a6d21638aff66a234fecfc88cfd4f3117335c0c912dd5327","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2014-07-01T15:11:27Z","title_canon_sha256":"2cebeeed064c257ca427dd9e85cf4375ea43e4f03834972ec4203552edd587b2"},"schema_version":"1.0","source":{"id":"1407.0272","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.0272","created_at":"2026-05-18T02:04:11Z"},{"alias_kind":"arxiv_version","alias_value":"1407.0272v2","created_at":"2026-05-18T02:04:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.0272","created_at":"2026-05-18T02:04:11Z"},{"alias_kind":"pith_short_12","alias_value":"O3RMSLLOXGY7","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"O3RMSLLOXGY7PTVI","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"O3RMSLLO","created_at":"2026-05-18T12:28:41Z"}],"graph_snapshots":[{"event_id":"sha256:77d7bf5b4b7699c2dc434fa790ea18ea8300e3668fc7d20dbcc873b07f6ca862","target":"graph","created_at":"2026-05-18T02:04:11Z","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":"When using an electromagnetic particle-in-cell (EM-PIC) code to simulate a relativistically drifting plasma, a violent numerical instability known as the numerical Cerenkov instability (NCI) occurs. The NCI is due to the unphysical coupling of electromagnetic waves on a grid to wave-particle resonances, including aliased resonances, i.e., $\\omega + 2\\pi\\mu/\\Delta t=(k_1+ 2\\pi\\nu_1/\\Delta x_1)v_0$, where $\\mu$ and $\\nu_1$ refer to the time and space aliases and the plasma is drifting relativistically at velocity $v_0$ in the $\\hat{1}$-direction. Recent studies have shown that an EM-PIC code whi","authors_text":"1649-026, 3) ((1) Department of Electrical Engineering, 6), Astronomy, Beijing 100084, CA 90095, California, China (3) Department of Physics, F. Fiuza (4), Frank S. Tsung (3), Jorge Vieira (5), Lisbon, Livermore, Los Angeles, Luis O. Silva (5), Peicheng Yu (1), Portugal), Portugal (6) ISCTE - Instituto Universit\\'ario de Lisboa, Ricardo A. Fonseca (5, Tsinghua University, University of California Los Angeles, USA (2) Department of Engineering Physics, USA (4) Lawrence Livermore National Laboratory, USA (5) Instituto Superior T\\'ecnico, Viktor K. Decyk (3), Warren B. Mori (1, Wei Lu (2), Xinlu Xu (2)","cross_cats":["physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2014-07-01T15:11:27Z","title":"Elimination of the numerical Cerenkov instability for spectral EM-PIC codes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.0272","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:e89c006c2fa53e03c65d94879c05450f0a1dbb2c6468846fcbcf34583a702a16","target":"record","created_at":"2026-05-18T02:04:11Z","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":"da9f3c71fa589809a6d21638aff66a234fecfc88cfd4f3117335c0c912dd5327","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2014-07-01T15:11:27Z","title_canon_sha256":"2cebeeed064c257ca427dd9e85cf4375ea43e4f03834972ec4203552edd587b2"},"schema_version":"1.0","source":{"id":"1407.0272","kind":"arxiv","version":2}},"canonical_sha256":"76e2c92d6eb9b1f7cea845c72e7f26923e28aed9932c7c073b18c7d64d1a1614","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"76e2c92d6eb9b1f7cea845c72e7f26923e28aed9932c7c073b18c7d64d1a1614","first_computed_at":"2026-05-18T02:04:11.048059Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:04:11.048059Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9LT+f2hWevCsj/+TOn8MRBTKdhVhOFhCTgcazHWhcFsMoZ1x8Oi7HY0zsSoz11yjHsbxz7eV1qAW5yUngHH1Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:04:11.048865Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.0272","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e89c006c2fa53e03c65d94879c05450f0a1dbb2c6468846fcbcf34583a702a16","sha256:77d7bf5b4b7699c2dc434fa790ea18ea8300e3668fc7d20dbcc873b07f6ca862"],"state_sha256":"10278b9714ace2623357b6bf27f6e4ceaf5470586f8f71663fc76801ecd9594c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Hmo0rUQPBsiFjQYzECAD3snlR8AC8M7z+Y2hA74Q8sTUhOyX9OO7hGtyr3cElrq2NlP0/qoTM9JwUrxhIJc5CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T19:00:07.595593Z","bundle_sha256":"e17aea216cbd1f400d5da20915f66828470ea4d5b0339c619a8b0acbf0623675"}}