{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:KASLI6KBLUK5ZJO26RNIAPOV5K","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":"aefe4388c57fe401f1c744d785db1a3962e90264fe526187585c319ed351fc32","cross_cats_sorted":["physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2026-06-01T08:14:31Z","title_canon_sha256":"23bf2d03b9b8f98f9e58959fb9e8a033aaeb3295047067ef3d0f4feed97d5ce3"},"schema_version":"1.0","source":{"id":"2606.01864","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.01864","created_at":"2026-06-02T02:04:58Z"},{"alias_kind":"arxiv_version","alias_value":"2606.01864v1","created_at":"2026-06-02T02:04:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.01864","created_at":"2026-06-02T02:04:58Z"},{"alias_kind":"pith_short_12","alias_value":"KASLI6KBLUK5","created_at":"2026-06-02T02:04:58Z"},{"alias_kind":"pith_short_16","alias_value":"KASLI6KBLUK5ZJO2","created_at":"2026-06-02T02:04:58Z"},{"alias_kind":"pith_short_8","alias_value":"KASLI6KB","created_at":"2026-06-02T02:04:58Z"}],"graph_snapshots":[{"event_id":"sha256:88b1fe68243781e601f32ecf69e58ee8ff7b9324b27cbc13b2ca46aa04f5d8a0","target":"graph","created_at":"2026-06-02T02:04:58Z","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/2606.01864/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper, we analyze the electromagnetic properties of space-time grooved metal surfaces governed by uniform-velocity modulations. We begin by deriving the electromagnetic fields of a uniform-velocity-modulated parallel-plate waveguide (PPW) using Lorentz transformations, establishing it as the fundamental building block of a more complex space-time structures. We then analyze the dispersion and scattering characteristics of a space-time grooved surface and later extend the study to the interaction between two facing surfaces. Our findings show that these systems can indeed amplify electr","authors_text":"Antonio Alex-Amor, Carlos Molero, Mario G. Silveirinha","cross_cats":["physics.app-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2026-06-01T08:14:31Z","title":"Gain and One-Way Propagation in Synthetically Moving non-Foster Gratings"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.01864","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":"sha256:85fe09f121f75bc9e7aee21e7b39c196073994de12546c6608f0e6964616d223","target":"record","created_at":"2026-06-02T02:04:58Z","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":"aefe4388c57fe401f1c744d785db1a3962e90264fe526187585c319ed351fc32","cross_cats_sorted":["physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2026-06-01T08:14:31Z","title_canon_sha256":"23bf2d03b9b8f98f9e58959fb9e8a033aaeb3295047067ef3d0f4feed97d5ce3"},"schema_version":"1.0","source":{"id":"2606.01864","kind":"arxiv","version":1}},"canonical_sha256":"5024b479415d15dca5daf45a803dd5ea8094da8c217e8343ec89fd0b544ca14a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5024b479415d15dca5daf45a803dd5ea8094da8c217e8343ec89fd0b544ca14a","first_computed_at":"2026-06-02T02:04:58.977800Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-02T02:04:58.977800Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5tCGrnVmzuKY0MIje30CSJZQiJzipqo9nzWntGYkLKUJUSlte8/PY01K50EwpW2tWu7J9A5jB+fmKtv1d4OQBQ==","signature_status":"signed_v1","signed_at":"2026-06-02T02:04:58.978165Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.01864","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:85fe09f121f75bc9e7aee21e7b39c196073994de12546c6608f0e6964616d223","sha256:88b1fe68243781e601f32ecf69e58ee8ff7b9324b27cbc13b2ca46aa04f5d8a0"],"state_sha256":"57a013b442dc156f3f44eb65208af596227224c34b53ec8a58fb5d27a9827a3a"}