{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:TJQ3QOYHUA745GFQTT74UX6TV2","short_pith_number":"pith:TJQ3QOYH","canonical_record":{"source":{"id":"2004.10615","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2020-04-22T14:57:35Z","cross_cats_sorted":["gr-qc","physics.optics"],"title_canon_sha256":"465fdd3c1e86316f7188f7cf6d466721c69097ec201f58db388ee573c4298533","abstract_canon_sha256":"417fe56c835a4700b81190ce40541f9bc5e033336245e136fc9d07d52a01a1e9"},"schema_version":"1.0"},"canonical_sha256":"9a61b83b07a03fce98b09cffca5fd3aeaef06c46861e02c9b863cb4f6a41c491","source":{"kind":"arxiv","id":"2004.10615","version":5},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.10615","created_at":"2026-07-05T02:11:47Z"},{"alias_kind":"arxiv_version","alias_value":"2004.10615v5","created_at":"2026-07-05T02:11:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.10615","created_at":"2026-07-05T02:11:47Z"},{"alias_kind":"pith_short_12","alias_value":"TJQ3QOYHUA74","created_at":"2026-07-05T02:11:47Z"},{"alias_kind":"pith_short_16","alias_value":"TJQ3QOYHUA745GFQ","created_at":"2026-07-05T02:11:47Z"},{"alias_kind":"pith_short_8","alias_value":"TJQ3QOYH","created_at":"2026-07-05T02:11:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:TJQ3QOYHUA745GFQTT74UX6TV2","target":"record","payload":{"canonical_record":{"source":{"id":"2004.10615","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2020-04-22T14:57:35Z","cross_cats_sorted":["gr-qc","physics.optics"],"title_canon_sha256":"465fdd3c1e86316f7188f7cf6d466721c69097ec201f58db388ee573c4298533","abstract_canon_sha256":"417fe56c835a4700b81190ce40541f9bc5e033336245e136fc9d07d52a01a1e9"},"schema_version":"1.0"},"canonical_sha256":"9a61b83b07a03fce98b09cffca5fd3aeaef06c46861e02c9b863cb4f6a41c491","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:11:47.249700Z","signature_b64":"8K13hZo52Of2zpRJnrNzECR+/D5TOdBzZeiPQx8aGtue8cZ/qcYaNnEM+R/um3lY0eh9vwyXKocFI9Sw5cX8BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9a61b83b07a03fce98b09cffca5fd3aeaef06c46861e02c9b863cb4f6a41c491","last_reissued_at":"2026-07-05T02:11:47.249284Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:11:47.249284Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2004.10615","source_version":5,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:11:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+/A/HLteKp0ZhpEd/pI2oVStl3KZLw3SBy/UZhFVqcNcFZwYPDjJmltxBjYIP1cweEaDUwImJAV8J9Ar8vTEBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T23:56:13.519487Z"},"content_sha256":"32ec6cfc503396d247c64c3f8c349f98409ead9d677f68fa8617a6c60734b331","schema_version":"1.0","event_id":"sha256:32ec6cfc503396d247c64c3f8c349f98409ead9d677f68fa8617a6c60734b331"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:TJQ3QOYHUA745GFQTT74UX6TV2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Trajectory of a flying plasma mirror traversing a target with density gradient","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","physics.optics"],"primary_cat":"physics.plasm-ph","authors_text":"Gerard Mourou, Pisin Chen","submitted_at":"2020-04-22T14:57:35Z","abstract_excerpt":"It has been proposed that laser-induced relativistic plasma mirror can accelerate if the plasma has a properly tailored density profile. Such accelerating plasma mirrors can serve as analog black holes to investigate Hawking evaporation and the associated information loss paradox. Here we reexamine the underlying dynamics of mirror motion in a graded-density plasma to provide an explicit trajectory as a function of the plasma density and its gradient. Specifically, a decreasing plasma density profile (down-ramp) along the direction of laser propagation would in general accelerate the mirror. I"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.10615","kind":"arxiv","version":5},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2004.10615/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T02:11:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PlVq1jkQNUBMKxDaXBh9gbH7yd0CFKhYJdUmhZIwBxP8V4FCY/aQVGWYP6NDAOws64U2//1jEeyx2jV0FCDbDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T23:56:13.520091Z"},"content_sha256":"ee5fab458504374665d6a630a37b6fb247c0414ebf048ee382b3148aff702960","schema_version":"1.0","event_id":"sha256:ee5fab458504374665d6a630a37b6fb247c0414ebf048ee382b3148aff702960"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TJQ3QOYHUA745GFQTT74UX6TV2/bundle.json","state_url":"https://pith.science/pith/TJQ3QOYHUA745GFQTT74UX6TV2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TJQ3QOYHUA745GFQTT74UX6TV2/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":"2026-08-18T23:56:13Z","links":{"resolver":"https://pith.science/pith/TJQ3QOYHUA745GFQTT74UX6TV2","bundle":"https://pith.science/pith/TJQ3QOYHUA745GFQTT74UX6TV2/bundle.json","state":"https://pith.science/pith/TJQ3QOYHUA745GFQTT74UX6TV2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TJQ3QOYHUA745GFQTT74UX6TV2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:TJQ3QOYHUA745GFQTT74UX6TV2","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":"417fe56c835a4700b81190ce40541f9bc5e033336245e136fc9d07d52a01a1e9","cross_cats_sorted":["gr-qc","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2020-04-22T14:57:35Z","title_canon_sha256":"465fdd3c1e86316f7188f7cf6d466721c69097ec201f58db388ee573c4298533"},"schema_version":"1.0","source":{"id":"2004.10615","kind":"arxiv","version":5}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.10615","created_at":"2026-07-05T02:11:47Z"},{"alias_kind":"arxiv_version","alias_value":"2004.10615v5","created_at":"2026-07-05T02:11:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.10615","created_at":"2026-07-05T02:11:47Z"},{"alias_kind":"pith_short_12","alias_value":"TJQ3QOYHUA74","created_at":"2026-07-05T02:11:47Z"},{"alias_kind":"pith_short_16","alias_value":"TJQ3QOYHUA745GFQ","created_at":"2026-07-05T02:11:47Z"},{"alias_kind":"pith_short_8","alias_value":"TJQ3QOYH","created_at":"2026-07-05T02:11:47Z"}],"graph_snapshots":[{"event_id":"sha256:ee5fab458504374665d6a630a37b6fb247c0414ebf048ee382b3148aff702960","target":"graph","created_at":"2026-07-05T02:11:47Z","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/2004.10615/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"It has been proposed that laser-induced relativistic plasma mirror can accelerate if the plasma has a properly tailored density profile. Such accelerating plasma mirrors can serve as analog black holes to investigate Hawking evaporation and the associated information loss paradox. Here we reexamine the underlying dynamics of mirror motion in a graded-density plasma to provide an explicit trajectory as a function of the plasma density and its gradient. Specifically, a decreasing plasma density profile (down-ramp) along the direction of laser propagation would in general accelerate the mirror. I","authors_text":"Gerard Mourou, Pisin Chen","cross_cats":["gr-qc","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2020-04-22T14:57:35Z","title":"Trajectory of a flying plasma mirror traversing a target with density gradient"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.10615","kind":"arxiv","version":5},"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":"sha256:32ec6cfc503396d247c64c3f8c349f98409ead9d677f68fa8617a6c60734b331","target":"record","created_at":"2026-07-05T02:11:47Z","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":"417fe56c835a4700b81190ce40541f9bc5e033336245e136fc9d07d52a01a1e9","cross_cats_sorted":["gr-qc","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2020-04-22T14:57:35Z","title_canon_sha256":"465fdd3c1e86316f7188f7cf6d466721c69097ec201f58db388ee573c4298533"},"schema_version":"1.0","source":{"id":"2004.10615","kind":"arxiv","version":5}},"canonical_sha256":"9a61b83b07a03fce98b09cffca5fd3aeaef06c46861e02c9b863cb4f6a41c491","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9a61b83b07a03fce98b09cffca5fd3aeaef06c46861e02c9b863cb4f6a41c491","first_computed_at":"2026-07-05T02:11:47.249284Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:11:47.249284Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8K13hZo52Of2zpRJnrNzECR+/D5TOdBzZeiPQx8aGtue8cZ/qcYaNnEM+R/um3lY0eh9vwyXKocFI9Sw5cX8BA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:11:47.249700Z","signed_message":"canonical_sha256_bytes"},"source_id":"2004.10615","source_kind":"arxiv","source_version":5}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:32ec6cfc503396d247c64c3f8c349f98409ead9d677f68fa8617a6c60734b331","sha256:ee5fab458504374665d6a630a37b6fb247c0414ebf048ee382b3148aff702960"],"state_sha256":"4eb5adfbf4d188a6dedefd2deb87cf47b9ada7bf61b58560555d399d4b3d0b40"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CUTWriKTOriZPCox+S6UhJSzRv2/dvGTQJhuqI4vo1F0O14EhwZj+H9UixepN14s6C+eQvnAMHqsnjXBin5sCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T23:56:13.525066Z","bundle_sha256":"6914db304d5a19c0acb8ee289629f9768250b9f5866e6733b2a6ee182238edf5"}}