{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:N6WTSREOPM22WUCQ76FUJXBPO5","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":"c37053f850943462e384e4cead21377eb26c8dcf587bdda95c6411448bbbf707","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2017-06-15T09:01:32Z","title_canon_sha256":"dc9efed90975a1ed16ac1e26e46ff71ffd274a7e544d3582dcbe3b7e30942aac"},"schema_version":"1.0","source":{"id":"1706.04778","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.04778","created_at":"2026-05-18T00:23:59Z"},{"alias_kind":"arxiv_version","alias_value":"1706.04778v2","created_at":"2026-05-18T00:23:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.04778","created_at":"2026-05-18T00:23:59Z"},{"alias_kind":"pith_short_12","alias_value":"N6WTSREOPM22","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_16","alias_value":"N6WTSREOPM22WUCQ","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_8","alias_value":"N6WTSREO","created_at":"2026-05-18T12:31:31Z"}],"graph_snapshots":[{"event_id":"sha256:c15dad9bde2d8b44c23b08affdae0f1779bdf850ad66ce56632afe7bcad3779a","target":"graph","created_at":"2026-05-18T00:23:59Z","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":"Gravitational models of self-tuning are those in which vacuum energy has no observable effect on spacetime curvature, even though it is a priori unsuppressed below the cut-off. We complement Weinberg's no go theorem by studying field theoretic completions of self-adjustment allowing for broken translations as well as other generalisations, and identify new obstructions. Our analysis uses a very general Kallen-Lehmann spectral representation of the exchange amplitude for conserved sources of energy-momentum and exploits unitarity and Lorentz invariance to show that a transition from self-tuning","authors_text":"Antonio Padilla, Florian Niedermann","cross_cats":["astro-ph.CO","gr-qc","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2017-06-15T09:01:32Z","title":"Gravitational Mechanisms to Self-Tune the Cosmological Constant: Obstructions and Ways Forward"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.04778","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:cb4a6e1eb06b53ba153fbaa2d82127a879405635696c8b924223f76700fc8cd8","target":"record","created_at":"2026-05-18T00:23:59Z","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":"c37053f850943462e384e4cead21377eb26c8dcf587bdda95c6411448bbbf707","cross_cats_sorted":["astro-ph.CO","gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2017-06-15T09:01:32Z","title_canon_sha256":"dc9efed90975a1ed16ac1e26e46ff71ffd274a7e544d3582dcbe3b7e30942aac"},"schema_version":"1.0","source":{"id":"1706.04778","kind":"arxiv","version":2}},"canonical_sha256":"6fad39448e7b35ab5050ff8b44dc2f77461a891825a2ebae49ae02572e818b29","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6fad39448e7b35ab5050ff8b44dc2f77461a891825a2ebae49ae02572e818b29","first_computed_at":"2026-05-18T00:23:59.033695Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:23:59.033695Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TIBhwrFTlVe9CZT/hvIN5qPofEj1+p01YVzuqSSsXSkY54jpGNtdzHgoM+O7pCb1k3tgfHJJOSwCOsZd/qXdDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:23:59.034149Z","signed_message":"canonical_sha256_bytes"},"source_id":"1706.04778","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cb4a6e1eb06b53ba153fbaa2d82127a879405635696c8b924223f76700fc8cd8","sha256:c15dad9bde2d8b44c23b08affdae0f1779bdf850ad66ce56632afe7bcad3779a"],"state_sha256":"956f00a6cd63b07647983f5829d72370cd45b6fb5cd902bb23cea36f4dd0e647"}