{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:WM6YQARM4PMFFM4KU27VMYHVIW","short_pith_number":"pith:WM6YQARM","canonical_record":{"source":{"id":"1107.4983","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-07-25T15:41:38Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"09385706d3d1779efe20a773ed7c49271ccaa88da5b7a9cdcb750bfa95685c57","abstract_canon_sha256":"22c618d4b4084f6557f1a2734af4118516a5a903cb2d45a056e0c2f863d2b49b"},"schema_version":"1.0"},"canonical_sha256":"b33d88022ce3d852b38aa6bf5660f545b36468a9ea0438724325cd66e70306cb","source":{"kind":"arxiv","id":"1107.4983","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.4983","created_at":"2026-05-18T03:13:34Z"},{"alias_kind":"arxiv_version","alias_value":"1107.4983v2","created_at":"2026-05-18T03:13:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.4983","created_at":"2026-05-18T03:13:34Z"},{"alias_kind":"pith_short_12","alias_value":"WM6YQARM4PMF","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"WM6YQARM4PMFFM4K","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"WM6YQARM","created_at":"2026-05-18T12:26:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:WM6YQARM4PMFFM4KU27VMYHVIW","target":"record","payload":{"canonical_record":{"source":{"id":"1107.4983","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-07-25T15:41:38Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"09385706d3d1779efe20a773ed7c49271ccaa88da5b7a9cdcb750bfa95685c57","abstract_canon_sha256":"22c618d4b4084f6557f1a2734af4118516a5a903cb2d45a056e0c2f863d2b49b"},"schema_version":"1.0"},"canonical_sha256":"b33d88022ce3d852b38aa6bf5660f545b36468a9ea0438724325cd66e70306cb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:13:34.375746Z","signature_b64":"N7fD6X47DRPbR58KXDw7MQo4wiJMT1TRFGOTSmN0HWVDQP1enxt1ME+fWNy42To7ozlM7p+5v8OmPT3PUFShDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b33d88022ce3d852b38aa6bf5660f545b36468a9ea0438724325cd66e70306cb","last_reissued_at":"2026-05-18T03:13:34.374905Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:13:34.374905Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1107.4983","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":"2026-05-18T03:13:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VHjDJD/YPrGfeUf4CaYhTFqlWcrb4WAIQhuLyRA+N650qOH6rWcWdw5tHbbXPbR8SG/4r7PJtECZNs7esOFOAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T10:18:22.509057Z"},"content_sha256":"83d37f4e9a950c017a9fdeddc94bae6609d69f21a62f9ca625fa08ab57cd0004","schema_version":"1.0","event_id":"sha256:83d37f4e9a950c017a9fdeddc94bae6609d69f21a62f9ca625fa08ab57cd0004"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:WM6YQARM4PMFFM4KU27VMYHVIW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Josephson-like currents in graphene for arbitrary time-dependent potential barriers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Peter Hanggi, Sergey E. Savel'ev, Wolfgang Hausler","submitted_at":"2011-07-25T15:41:38Z","abstract_excerpt":"From the exact solution of the Dirac-Weyl equation we find unusual currents j_y running in y-direction parallel to a time-dependent scalar potential barrier W(x,t) placed upon a monolayer of graphene, even for vanishing momentum component p_y. In their sine-like dependence on the phase difference of wave functions, describing left and right moving Dirac fermions, these currents resemble Josephson currents in superconductors, including the occurance of Shapiro steps at certain frequencies of potential oscillations. The Josephson-like currents are calculated for several specific time-dependent b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.4983","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":"2026-05-18T03:13:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Il1XE7r2E4ZfNv4fs4oRiAXWIyVBVbz/9SRD1EE8fCFGSmfbr8MYB+hbI4wX3RB9U0TKgkIB9EQibsjsHGPzBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T10:18:22.509414Z"},"content_sha256":"c294466e027221e48b5a44d359d08b83863765d1de5155108eab93df18369a88","schema_version":"1.0","event_id":"sha256:c294466e027221e48b5a44d359d08b83863765d1de5155108eab93df18369a88"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WM6YQARM4PMFFM4KU27VMYHVIW/bundle.json","state_url":"https://pith.science/pith/WM6YQARM4PMFFM4KU27VMYHVIW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WM6YQARM4PMFFM4KU27VMYHVIW/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":"2026-05-19T10:18:22Z","links":{"resolver":"https://pith.science/pith/WM6YQARM4PMFFM4KU27VMYHVIW","bundle":"https://pith.science/pith/WM6YQARM4PMFFM4KU27VMYHVIW/bundle.json","state":"https://pith.science/pith/WM6YQARM4PMFFM4KU27VMYHVIW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WM6YQARM4PMFFM4KU27VMYHVIW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:WM6YQARM4PMFFM4KU27VMYHVIW","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":"22c618d4b4084f6557f1a2734af4118516a5a903cb2d45a056e0c2f863d2b49b","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-07-25T15:41:38Z","title_canon_sha256":"09385706d3d1779efe20a773ed7c49271ccaa88da5b7a9cdcb750bfa95685c57"},"schema_version":"1.0","source":{"id":"1107.4983","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.4983","created_at":"2026-05-18T03:13:34Z"},{"alias_kind":"arxiv_version","alias_value":"1107.4983v2","created_at":"2026-05-18T03:13:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.4983","created_at":"2026-05-18T03:13:34Z"},{"alias_kind":"pith_short_12","alias_value":"WM6YQARM4PMF","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"WM6YQARM4PMFFM4K","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"WM6YQARM","created_at":"2026-05-18T12:26:44Z"}],"graph_snapshots":[{"event_id":"sha256:c294466e027221e48b5a44d359d08b83863765d1de5155108eab93df18369a88","target":"graph","created_at":"2026-05-18T03:13:34Z","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":"From the exact solution of the Dirac-Weyl equation we find unusual currents j_y running in y-direction parallel to a time-dependent scalar potential barrier W(x,t) placed upon a monolayer of graphene, even for vanishing momentum component p_y. In their sine-like dependence on the phase difference of wave functions, describing left and right moving Dirac fermions, these currents resemble Josephson currents in superconductors, including the occurance of Shapiro steps at certain frequencies of potential oscillations. The Josephson-like currents are calculated for several specific time-dependent b","authors_text":"Peter Hanggi, Sergey E. Savel'ev, Wolfgang Hausler","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-07-25T15:41:38Z","title":"Josephson-like currents in graphene for arbitrary time-dependent potential barriers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.4983","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":"sha256:83d37f4e9a950c017a9fdeddc94bae6609d69f21a62f9ca625fa08ab57cd0004","target":"record","created_at":"2026-05-18T03:13:34Z","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":"22c618d4b4084f6557f1a2734af4118516a5a903cb2d45a056e0c2f863d2b49b","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-07-25T15:41:38Z","title_canon_sha256":"09385706d3d1779efe20a773ed7c49271ccaa88da5b7a9cdcb750bfa95685c57"},"schema_version":"1.0","source":{"id":"1107.4983","kind":"arxiv","version":2}},"canonical_sha256":"b33d88022ce3d852b38aa6bf5660f545b36468a9ea0438724325cd66e70306cb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b33d88022ce3d852b38aa6bf5660f545b36468a9ea0438724325cd66e70306cb","first_computed_at":"2026-05-18T03:13:34.374905Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:13:34.374905Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"N7fD6X47DRPbR58KXDw7MQo4wiJMT1TRFGOTSmN0HWVDQP1enxt1ME+fWNy42To7ozlM7p+5v8OmPT3PUFShDw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:13:34.375746Z","signed_message":"canonical_sha256_bytes"},"source_id":"1107.4983","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:83d37f4e9a950c017a9fdeddc94bae6609d69f21a62f9ca625fa08ab57cd0004","sha256:c294466e027221e48b5a44d359d08b83863765d1de5155108eab93df18369a88"],"state_sha256":"983a83b5a89805a3f979e33282a4212334a402765d6917f796fdcb36c8e34754"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EKX1rAR1u3qI4Is7zaoRQymYMgrs3kRfk0ss6L+T2xvdjk/MAZi4ivtmyReK96Rr8l6ay3k4C2r6n4Qe9ew8Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T10:18:22.510996Z","bundle_sha256":"e161bb2e2333e0abdb6e5dcdd062f582411cfa0bb4d1988d4a661601627a4cef"}}