{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:K6XJR42SMX4VGY6TUDWLUR2NZR","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":"b43c8a8a3c9ef496d0919a46a49cfa9600d0b40714997ca6dd39463fafb6e4ed","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2018-11-04T12:19:10Z","title_canon_sha256":"7c4e373229c0291bd8da83a0b0b9dcad663ab721117a2e006bd5b19798addf50"},"schema_version":"1.0","source":{"id":"1811.01358","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.01358","created_at":"2026-05-18T00:00:46Z"},{"alias_kind":"arxiv_version","alias_value":"1811.01358v1","created_at":"2026-05-18T00:00:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.01358","created_at":"2026-05-18T00:00:46Z"},{"alias_kind":"pith_short_12","alias_value":"K6XJR42SMX4V","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_16","alias_value":"K6XJR42SMX4VGY6T","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_8","alias_value":"K6XJR42S","created_at":"2026-05-18T12:32:33Z"}],"graph_snapshots":[{"event_id":"sha256:19adb265e272cb7ed97ace5d1e2686e3eea10b19151c2e47db802ddb98d68621","target":"graph","created_at":"2026-05-18T00:00:46Z","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":"In this theoretical study, the problem of self-focusing of an X-ray intense laser beam in the thermal quantum plasma is studied. Using a relativistic fluid model and taking into account the hydrodynamic pressure of degenerate electrons in the zero temperature limit, the nonlinear momentum equation of electrons is solved by means of a perturbative method and the nonlinear current density of the relativistic degenerate electrons is obtained. Saving only the third-order nonlinearity of the laser beam amplitude, a nonlinear equation describing the interaction of laser beam with the quantum plasma ","authors_text":"Hosein Mohammadzadeh, K. Javidan, Naser Sepehri Javan, Ramin Roozehdar Mogaddam","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2018-11-04T12:19:10Z","title":"Perturbative approach to the self-focusing of intense X-ray laser beam propagating in thermal quantum plasma"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.01358","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":"sha256:78432a7141cf54b10837993c16ef82fd082ea30d980938d326bf53d4f6ca39f1","target":"record","created_at":"2026-05-18T00:00:46Z","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":"b43c8a8a3c9ef496d0919a46a49cfa9600d0b40714997ca6dd39463fafb6e4ed","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2018-11-04T12:19:10Z","title_canon_sha256":"7c4e373229c0291bd8da83a0b0b9dcad663ab721117a2e006bd5b19798addf50"},"schema_version":"1.0","source":{"id":"1811.01358","kind":"arxiv","version":1}},"canonical_sha256":"57ae98f35265f95363d3a0ecba474dcc7c90d5f4538c33aa2389d5d5243dd257","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"57ae98f35265f95363d3a0ecba474dcc7c90d5f4538c33aa2389d5d5243dd257","first_computed_at":"2026-05-18T00:00:46.955024Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:46.955024Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OsByXTwkff2QftQFXoVbbloek5y4s1CHGBkiZWhyKq8ZGqEXEDyqfaAsFqJ3NgkX3O71YKXdHO7djse2uvrrBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:46.955419Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.01358","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:78432a7141cf54b10837993c16ef82fd082ea30d980938d326bf53d4f6ca39f1","sha256:19adb265e272cb7ed97ace5d1e2686e3eea10b19151c2e47db802ddb98d68621"],"state_sha256":"854add1cccd423a849b6009bb974376f8872462fd2bdb5bef57a16e8c26cdbc8"}