{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:SV5ZJ73CYH34WW3PN4WSNW6KML","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":"5a7fd7e234ac850bf076f1f30a74639162c53a7772f69aec816c185511f71277","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-10-19T21:29:04Z","title_canon_sha256":"73e72568361e64ab75fdf6418b78c3405e334f458867f8ffa154737177ea32e5"},"schema_version":"1.0","source":{"id":"1510.05694","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.05694","created_at":"2026-05-18T01:18:14Z"},{"alias_kind":"arxiv_version","alias_value":"1510.05694v2","created_at":"2026-05-18T01:18:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.05694","created_at":"2026-05-18T01:18:14Z"},{"alias_kind":"pith_short_12","alias_value":"SV5ZJ73CYH34","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"SV5ZJ73CYH34WW3P","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"SV5ZJ73C","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:dc9d0edea37002f228a0d2661cce63aadf44c399ce674213f5b9517e5d518110","target":"graph","created_at":"2026-05-18T01:18:14Z","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 study amplified spontaneous emission (ASE) from wavelength-scale composite bodies--complicated arrangements of active and passive media--demonstrating highly directional and tunable radiation patterns, depending strongly on pump conditions, materials, and object shapes. For instance, we show that under large enough gain, $\\mathcal{PT}$ symmetric dielectric spheres radiate mostly along either active or passive regions, depending on the gain distribution. Our predictions are based on a recently proposed fluctuating volume--current (FVC) formulation of electromagnetic radiation that can handle","authors_text":"Adi Pick, Alejandro W. Rodriguez, Athanasios G. Polimeridis, Chinmay Khandekar, Weiliang Jin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-10-19T21:29:04Z","title":"Amplified and directional spontaneous emission from arbitrary composite bodies: self-consistent treatment of Purcell effect below threshold"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.05694","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:d9754da92179cd286b80b908b17c148f472412d99a1ca6e1ab480fe6013e962f","target":"record","created_at":"2026-05-18T01:18:14Z","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":"5a7fd7e234ac850bf076f1f30a74639162c53a7772f69aec816c185511f71277","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-10-19T21:29:04Z","title_canon_sha256":"73e72568361e64ab75fdf6418b78c3405e334f458867f8ffa154737177ea32e5"},"schema_version":"1.0","source":{"id":"1510.05694","kind":"arxiv","version":2}},"canonical_sha256":"957b94ff62c1f7cb5b6f6f2d26dbca62db5e4db88d066390b15e4fa77c73d8b5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"957b94ff62c1f7cb5b6f6f2d26dbca62db5e4db88d066390b15e4fa77c73d8b5","first_computed_at":"2026-05-18T01:18:14.220201Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:18:14.220201Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"h/NwDgZFum+YzD6cFq5u1p8obvURfLmfs95veX+uwvnxsTj54c9gbipVhdcoebP+Gr32tDEvAkCiUqfr0p7eBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:18:14.220879Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.05694","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d9754da92179cd286b80b908b17c148f472412d99a1ca6e1ab480fe6013e962f","sha256:dc9d0edea37002f228a0d2661cce63aadf44c399ce674213f5b9517e5d518110"],"state_sha256":"18f510085ebf8136baaa5f0c73414dc0ad3e04f2dd86a58f4b7423b3183509b7"}