{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:GBHA2SGNV37VHV54I4FCSQJXMQ","short_pith_number":"pith:GBHA2SGN","canonical_record":{"source":{"id":"1011.1728","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2010-11-08T08:43:22Z","cross_cats_sorted":[],"title_canon_sha256":"a6662606b4946970496b2bb3fe0edec27737c8d10e25fa8a91cd7dc81db75842","abstract_canon_sha256":"8a02d449bc5517a45709cd700cef344f1b1693e5fb8d429826b340bedffec6a8"},"schema_version":"1.0"},"canonical_sha256":"304e0d48cdaeff53d7bc470a2941376402f87e07e81c59276cbce9adf1212402","source":{"kind":"arxiv","id":"1011.1728","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.1728","created_at":"2026-05-18T04:31:59Z"},{"alias_kind":"arxiv_version","alias_value":"1011.1728v1","created_at":"2026-05-18T04:31:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.1728","created_at":"2026-05-18T04:31:59Z"},{"alias_kind":"pith_short_12","alias_value":"GBHA2SGNV37V","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"GBHA2SGNV37VHV54","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"GBHA2SGN","created_at":"2026-05-18T12:26:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:GBHA2SGNV37VHV54I4FCSQJXMQ","target":"record","payload":{"canonical_record":{"source":{"id":"1011.1728","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2010-11-08T08:43:22Z","cross_cats_sorted":[],"title_canon_sha256":"a6662606b4946970496b2bb3fe0edec27737c8d10e25fa8a91cd7dc81db75842","abstract_canon_sha256":"8a02d449bc5517a45709cd700cef344f1b1693e5fb8d429826b340bedffec6a8"},"schema_version":"1.0"},"canonical_sha256":"304e0d48cdaeff53d7bc470a2941376402f87e07e81c59276cbce9adf1212402","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:31:59.853197Z","signature_b64":"dgowpjPLyyFgdoPEwsGcV5qunyPjpyNqnWMv8xB3M5jN7GrCINVbVaS6mojFF/qMZffsmm5uZtG0R+36aQefBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"304e0d48cdaeff53d7bc470a2941376402f87e07e81c59276cbce9adf1212402","last_reissued_at":"2026-05-18T04:31:59.852725Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:31:59.852725Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1011.1728","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:31:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C4mZxUJHa3WIR37VTjGc/5lcMN8wv0eBukglBT0TReK83rXFwIoQ9CWGgMbkxPUaR/rEb8zcuaNEBJSK84WXDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T02:42:42.713501Z"},"content_sha256":"5954ebdb2c316db09726b2379b66a8586c539fba03cf588b9bc8ba76f8d4bdb6","schema_version":"1.0","event_id":"sha256:5954ebdb2c316db09726b2379b66a8586c539fba03cf588b9bc8ba76f8d4bdb6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:GBHA2SGNV37VHV54I4FCSQJXMQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An application of the variational analysis to calculate the meson spectral functions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-lat","authors_text":"H. Ohno, H. Saito, K. Kanaya, S. Aoki, S. Ejiri, T. Umeda (WHOT-QCD Collaboration), Y. Maezawa","submitted_at":"2010-11-08T08:43:22Z","abstract_excerpt":"We present a new method to calculate meson spectral functions (SPFs) on the lattice based on a variational method. Because, on a finite volume lattice, the meson SPFs have discrete spectra only, a suitable way to extract such discrete signals is needed. Using a variational method, we can calculate several discrete quantities such as the position and the area of spectral peaks for low-lying states. Moreover data accuracy can be improved by increasing the number of basis functions. In this report, we first confirm our method in the free quark case and show that our method works well. Then, we ap"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.1728","kind":"arxiv","version":1},"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":"2026-05-18T04:31:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ulcvtfAk/JWORRxxu73gONTaSLgC5pwzpxdFFRz72N2Pfp+Y9aUl1FUnqKOUagNhP6VLGExTpVmgGTfHKEzsDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T02:42:42.713950Z"},"content_sha256":"33ad4931072455316e55f552458a0b31f9a6c59028d1f4483908a9c2b2927e90","schema_version":"1.0","event_id":"sha256:33ad4931072455316e55f552458a0b31f9a6c59028d1f4483908a9c2b2927e90"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GBHA2SGNV37VHV54I4FCSQJXMQ/bundle.json","state_url":"https://pith.science/pith/GBHA2SGNV37VHV54I4FCSQJXMQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GBHA2SGNV37VHV54I4FCSQJXMQ/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":"2026-05-26T02:42:42Z","links":{"resolver":"https://pith.science/pith/GBHA2SGNV37VHV54I4FCSQJXMQ","bundle":"https://pith.science/pith/GBHA2SGNV37VHV54I4FCSQJXMQ/bundle.json","state":"https://pith.science/pith/GBHA2SGNV37VHV54I4FCSQJXMQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GBHA2SGNV37VHV54I4FCSQJXMQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:GBHA2SGNV37VHV54I4FCSQJXMQ","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":"8a02d449bc5517a45709cd700cef344f1b1693e5fb8d429826b340bedffec6a8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2010-11-08T08:43:22Z","title_canon_sha256":"a6662606b4946970496b2bb3fe0edec27737c8d10e25fa8a91cd7dc81db75842"},"schema_version":"1.0","source":{"id":"1011.1728","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.1728","created_at":"2026-05-18T04:31:59Z"},{"alias_kind":"arxiv_version","alias_value":"1011.1728v1","created_at":"2026-05-18T04:31:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.1728","created_at":"2026-05-18T04:31:59Z"},{"alias_kind":"pith_short_12","alias_value":"GBHA2SGNV37V","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"GBHA2SGNV37VHV54","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"GBHA2SGN","created_at":"2026-05-18T12:26:07Z"}],"graph_snapshots":[{"event_id":"sha256:33ad4931072455316e55f552458a0b31f9a6c59028d1f4483908a9c2b2927e90","target":"graph","created_at":"2026-05-18T04:31:59Z","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":"We present a new method to calculate meson spectral functions (SPFs) on the lattice based on a variational method. Because, on a finite volume lattice, the meson SPFs have discrete spectra only, a suitable way to extract such discrete signals is needed. Using a variational method, we can calculate several discrete quantities such as the position and the area of spectral peaks for low-lying states. Moreover data accuracy can be improved by increasing the number of basis functions. In this report, we first confirm our method in the free quark case and show that our method works well. Then, we ap","authors_text":"H. Ohno, H. Saito, K. Kanaya, S. Aoki, S. Ejiri, T. Umeda (WHOT-QCD Collaboration), Y. Maezawa","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2010-11-08T08:43:22Z","title":"An application of the variational analysis to calculate the meson spectral functions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.1728","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":"sha256:5954ebdb2c316db09726b2379b66a8586c539fba03cf588b9bc8ba76f8d4bdb6","target":"record","created_at":"2026-05-18T04:31:59Z","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":"8a02d449bc5517a45709cd700cef344f1b1693e5fb8d429826b340bedffec6a8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2010-11-08T08:43:22Z","title_canon_sha256":"a6662606b4946970496b2bb3fe0edec27737c8d10e25fa8a91cd7dc81db75842"},"schema_version":"1.0","source":{"id":"1011.1728","kind":"arxiv","version":1}},"canonical_sha256":"304e0d48cdaeff53d7bc470a2941376402f87e07e81c59276cbce9adf1212402","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"304e0d48cdaeff53d7bc470a2941376402f87e07e81c59276cbce9adf1212402","first_computed_at":"2026-05-18T04:31:59.852725Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:31:59.852725Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dgowpjPLyyFgdoPEwsGcV5qunyPjpyNqnWMv8xB3M5jN7GrCINVbVaS6mojFF/qMZffsmm5uZtG0R+36aQefBw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:31:59.853197Z","signed_message":"canonical_sha256_bytes"},"source_id":"1011.1728","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5954ebdb2c316db09726b2379b66a8586c539fba03cf588b9bc8ba76f8d4bdb6","sha256:33ad4931072455316e55f552458a0b31f9a6c59028d1f4483908a9c2b2927e90"],"state_sha256":"fbc91224f891378880655a13ba47f304940057cf3ee39f9ea26f19abf96ed27b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xtnlsCsayxMghOFj19Aapnl/CtCYlYRvGfBu8qs7W6k/pJPgE76ndP18JTTt3jmen4N5iOdPceuDE/UNCx6aAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T02:42:42.716801Z","bundle_sha256":"5cbc1c524c88775afe297513bc2428ca4e37c63d7506b807d93ca40251bb0028"}}