{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"54139561a6cc695408e6d82c4fc801948da1e220bd2b2de5e83d284b1c2b02b9","created":"2026-10-03T07:18:09Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"90f0a82a48d1b9a665196f606dd536cdf2ccbdeeaf3260dacde943efa582bf48","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"identification","assisted_by":[],"external_id":"qft.nonlagrangian.def-20-theory","kind":"phenomenon","literature_status":"open","n":"1","parents":[],"plain":"The six-dimensional $(2,0)$ theory, the version with the maximum amount of supersymmetry, is defined only as a limit of a stack of M5-branes, membrane-like objects of M-theory. A definition that stands on its own is missing.","posed_since":"1995","precise":"The 6D $N=(2,0)$ superconformal theory of type $A_{N-1}$ is defined as the low-energy limit of N coincident M5-branes or of type IIB string theory on $C^2/Z_N$. Give a self-contained definition independent of string and M-theory (operator algebra and Hilbert space, a UV completion via 5D maximally supersymmetric Yang-Mills, deconstruction, or a lattice limit) that reproduces known data: anomaly coefficients scaling as $N^3$, the $W_N$ chiral algebra, and the protected spectrum.","problem_ref":null,"references":"","settled_by":"A construction from which the $N^{3}$ anomaly scaling and the $W_N$ chiral algebra follow as derived results.","status_note":"Proposals that 5D maximally supersymmetric Yang-Mills is a complete definition (2010-2011) and deconstruction approaches are not accepted as complete.","title":"Intrinsic definition of the six-dimensional (2,0) theory","topic_ref":"89c4f4e8e732715fcb8a83bb2026e68b8e5c52f290604701597479d68fe09a36"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"d8b8a12a13e4d22fb6d98cc0c36f770396d5aff8aa59ae5c27467a817762281f","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"f42145c87bfc11270523ccb1ecec7a49c28733b5271b9b98a2f9148b0fc184d0","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"zszYNFCfmq1DOK_2bxEvbwBaRaHym8dJ9j_Ci4ahdAM7m8psoz-XqFsNJ17AFsDs9B7mNCr00ZSzlk-UHryrDQ"},"schema":"pubphys.envelope/1"},"record_hash":"d8b8a12a13e4d22fb6d98cc0c36f770396d5aff8aa59ae5c27467a817762281f","leaf_index":1932}