{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:YSTSFK4EITORCNKTSUK3M4H24R","short_pith_number":"pith:YSTSFK4E","canonical_record":{"source":{"id":"2001.06024","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2020-01-16T19:01:05Z","cross_cats_sorted":["cond-mat.quant-gas","cond-mat.str-el"],"title_canon_sha256":"ff240d6f5295413948e9bea041d0f7a1daccaab712a2a15074ca593485cfba38","abstract_canon_sha256":"49262275099e4232124fbce8fbd90c7b446891d7a3b7b65fa4e3b86c525ec99d"},"schema_version":"1.0"},"canonical_sha256":"c4a722ab8444dd1135539515b670fae46985a73906596c78807223c23c63bce6","source":{"kind":"arxiv","id":"2001.06024","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.06024","created_at":"2026-07-05T01:29:49Z"},{"alias_kind":"arxiv_version","alias_value":"2001.06024v2","created_at":"2026-07-05T01:29:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.06024","created_at":"2026-07-05T01:29:49Z"},{"alias_kind":"pith_short_12","alias_value":"YSTSFK4EITOR","created_at":"2026-07-05T01:29:49Z"},{"alias_kind":"pith_short_16","alias_value":"YSTSFK4EITORCNKT","created_at":"2026-07-05T01:29:49Z"},{"alias_kind":"pith_short_8","alias_value":"YSTSFK4E","created_at":"2026-07-05T01:29:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:YSTSFK4EITORCNKTSUK3M4H24R","target":"record","payload":{"canonical_record":{"source":{"id":"2001.06024","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2020-01-16T19:01:05Z","cross_cats_sorted":["cond-mat.quant-gas","cond-mat.str-el"],"title_canon_sha256":"ff240d6f5295413948e9bea041d0f7a1daccaab712a2a15074ca593485cfba38","abstract_canon_sha256":"49262275099e4232124fbce8fbd90c7b446891d7a3b7b65fa4e3b86c525ec99d"},"schema_version":"1.0"},"canonical_sha256":"c4a722ab8444dd1135539515b670fae46985a73906596c78807223c23c63bce6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:29:49.924294Z","signature_b64":"XRd8T85HSA4duKiUeb6FzF22FkqM3HWReNvmxxKkQtdcT9Aklsn4OdRw5Bt+z2N7+EXh5U3KqKgFiPUskfbNCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c4a722ab8444dd1135539515b670fae46985a73906596c78807223c23c63bce6","last_reissued_at":"2026-07-05T01:29:49.923874Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:29:49.923874Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2001.06024","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":"2026-07-05T01:29:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F4/p0+uj28bVeLUziT+5ROoFzesD2CWd3tYVagrLjibsESQi9P2dQ3diOn7CvbqW1Jnog7sWT7AmoJfTHmG7Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T21:34:06.004440Z"},"content_sha256":"797715213fb1f44364ca7f99dc6f2b8d358ddf24f3318681214505159ad6ca0c","schema_version":"1.0","event_id":"sha256:797715213fb1f44364ca7f99dc6f2b8d358ddf24f3318681214505159ad6ca0c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:YSTSFK4EITORCNKTSUK3M4H24R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spontaneously broken boosts and the Goldstone continuum","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.quant-gas","cond-mat.str-el"],"primary_cat":"hep-th","authors_text":"Alberto Nicolis, Lasma Alberte","submitted_at":"2020-01-16T19:01:05Z","abstract_excerpt":"The spontaneous breaking of boost invariance is ubiquitous in nature, yet the associated Goldstone bosons are nowhere to be seen. We discuss why some subtleties are to be expected in the Goldstone phenomenon for spontaneously broken boosts, and derive the corresponding quantum mechanical, non-perturbative Goldstone theorem. Despite similarities with more standard Goldstone theorems, we show by examples that ours can be obeyed by quite unusual spectra of low-energy excitations. In particular, for non-relativistic Fermi liquids, we prove that it is obeyed by the particle-hole continuum. To the b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.06024","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2001.06024/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":"2026-07-05T01:29:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d41lJRseSJaUWPXzJaeYqzM3aEt2vlvmhdKInp5kQ+TZWfU6LYqdHbOinsGmpbNxqXoxzD7AwdKbjuLts9cZDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T21:34:06.004972Z"},"content_sha256":"4618f4ceff7e5cdaeca9976d9d93236289af1bc8c0ca8e8fbaa13d692031b964","schema_version":"1.0","event_id":"sha256:4618f4ceff7e5cdaeca9976d9d93236289af1bc8c0ca8e8fbaa13d692031b964"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YSTSFK4EITORCNKTSUK3M4H24R/bundle.json","state_url":"https://pith.science/pith/YSTSFK4EITORCNKTSUK3M4H24R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YSTSFK4EITORCNKTSUK3M4H24R/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":"2026-08-03T21:34:06Z","links":{"resolver":"https://pith.science/pith/YSTSFK4EITORCNKTSUK3M4H24R","bundle":"https://pith.science/pith/YSTSFK4EITORCNKTSUK3M4H24R/bundle.json","state":"https://pith.science/pith/YSTSFK4EITORCNKTSUK3M4H24R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YSTSFK4EITORCNKTSUK3M4H24R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:YSTSFK4EITORCNKTSUK3M4H24R","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":"49262275099e4232124fbce8fbd90c7b446891d7a3b7b65fa4e3b86c525ec99d","cross_cats_sorted":["cond-mat.quant-gas","cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2020-01-16T19:01:05Z","title_canon_sha256":"ff240d6f5295413948e9bea041d0f7a1daccaab712a2a15074ca593485cfba38"},"schema_version":"1.0","source":{"id":"2001.06024","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.06024","created_at":"2026-07-05T01:29:49Z"},{"alias_kind":"arxiv_version","alias_value":"2001.06024v2","created_at":"2026-07-05T01:29:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.06024","created_at":"2026-07-05T01:29:49Z"},{"alias_kind":"pith_short_12","alias_value":"YSTSFK4EITOR","created_at":"2026-07-05T01:29:49Z"},{"alias_kind":"pith_short_16","alias_value":"YSTSFK4EITORCNKT","created_at":"2026-07-05T01:29:49Z"},{"alias_kind":"pith_short_8","alias_value":"YSTSFK4E","created_at":"2026-07-05T01:29:49Z"}],"graph_snapshots":[{"event_id":"sha256:4618f4ceff7e5cdaeca9976d9d93236289af1bc8c0ca8e8fbaa13d692031b964","target":"graph","created_at":"2026-07-05T01:29:49Z","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/2001.06024/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The spontaneous breaking of boost invariance is ubiquitous in nature, yet the associated Goldstone bosons are nowhere to be seen. We discuss why some subtleties are to be expected in the Goldstone phenomenon for spontaneously broken boosts, and derive the corresponding quantum mechanical, non-perturbative Goldstone theorem. Despite similarities with more standard Goldstone theorems, we show by examples that ours can be obeyed by quite unusual spectra of low-energy excitations. In particular, for non-relativistic Fermi liquids, we prove that it is obeyed by the particle-hole continuum. To the b","authors_text":"Alberto Nicolis, Lasma Alberte","cross_cats":["cond-mat.quant-gas","cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2020-01-16T19:01:05Z","title":"Spontaneously broken boosts and the Goldstone continuum"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.06024","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":"sha256:797715213fb1f44364ca7f99dc6f2b8d358ddf24f3318681214505159ad6ca0c","target":"record","created_at":"2026-07-05T01:29:49Z","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":"49262275099e4232124fbce8fbd90c7b446891d7a3b7b65fa4e3b86c525ec99d","cross_cats_sorted":["cond-mat.quant-gas","cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2020-01-16T19:01:05Z","title_canon_sha256":"ff240d6f5295413948e9bea041d0f7a1daccaab712a2a15074ca593485cfba38"},"schema_version":"1.0","source":{"id":"2001.06024","kind":"arxiv","version":2}},"canonical_sha256":"c4a722ab8444dd1135539515b670fae46985a73906596c78807223c23c63bce6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c4a722ab8444dd1135539515b670fae46985a73906596c78807223c23c63bce6","first_computed_at":"2026-07-05T01:29:49.923874Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:29:49.923874Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XRd8T85HSA4duKiUeb6FzF22FkqM3HWReNvmxxKkQtdcT9Aklsn4OdRw5Bt+z2N7+EXh5U3KqKgFiPUskfbNCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:29:49.924294Z","signed_message":"canonical_sha256_bytes"},"source_id":"2001.06024","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:797715213fb1f44364ca7f99dc6f2b8d358ddf24f3318681214505159ad6ca0c","sha256:4618f4ceff7e5cdaeca9976d9d93236289af1bc8c0ca8e8fbaa13d692031b964"],"state_sha256":"c8eed351b67bd9225cc217cec84fae654c1d0a0b790c32f845c2540f03f1da42"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a/5h8MP+KegFcRoRGuTUPKZz93oYxmjD7b5HAAhASQRxCuXw/zOErGpk9aaEzma/cQ+DewP8GsYtfrQ0NVyNCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T21:34:06.009987Z","bundle_sha256":"7ca58ad12df69108e009293d69a455d9f1c9fa05faf13715edf6a69a78ad7334"}}