{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.topic/1","content_sha256":"45b644eda34ac52b4f6594ec63a93990f1dd8b53ee626a400c1789ef998fc80d","created":"2026-10-03T07:17:52Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":[],"salt":"d5c35de92ca33e57e23e1d3ec785a47ed4441c43b6c6d27f382bdc7cb8731bf4","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"topic"},"content":{"external_id":"qft.nonlagrangian","field":"qft","n":"1","review_cite":"J. J. Heckman, T. Rudelius, Top Down Approach to 6D SCFTs, J. Phys. A 52, 093001, 2019","review_link":"https://arxiv.org/abs/1805.06467","review_verified":"true","summary":"Some quantum field theories are known to exist only indirectly, from string theory, and have no formula listing their fields and interactions. The six-dimensional (2,0) theory is the main example: its properties can be computed, but it cannot be written down.","title":"Non-Lagrangian theories and six-dimensional superconformal theories","topic_ref":null,"why":"These theories generate and explain large families of four-dimensional theories and show that the usual Lagrangian description of quantum field theory is incomplete."},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"89c4f4e8e732715fcb8a83bb2026e68b8e5c52f290604701597479d68fe09a36","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"9023cdcb5356e9be75d002582a5512d2d60c47daa0f0e34ba1ded6ee45123ee9","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"BQmM1AO-eMziYfV-tTQsVovjR-FZrM4NWblDHH1G4LqEqRWqeewZ2WJBvXE1sOML7y0hHHlngifUFt6Zpg5_Cw"},"schema":"pubphys.envelope/1"},"record_hash":"89c4f4e8e732715fcb8a83bb2026e68b8e5c52f290604701597479d68fe09a36","leaf_index":320}