Logarithmic level-rank duality for boundary VOAs

Let N~n,k\widetilde{{\mathcal N}}_{n,k} be the slight modification of the boundary VOA Nn,k{\mathcal N}_{n,k} obtained by successive extension and orbifold, let Dn,kFTk(sln){\mathcal D}_{n,k}\simeq\mathcal{FT}_k(\mathfrak{sl}_n), and let FF(nk){\text{FF}}(nk) be nknk copies of free fermions. Logarithmic level-rank duality conjecture. The two VOAs are mutual commutants inside the free fermions:

N~n,kFF(nk)/Dn,k,Dn,kFF(nk)/N~n,k.\widetilde{{\mathcal N}}_{n,k}\simeq {\text{FF}}(nk)/{\mathcal D}_{n,k},\qquad {\mathcal D}_{n,k}\simeq {\text{FF}}(nk)/\widetilde{{\mathcal N}}_{n,k}.

This would induce a braid-reversed equivalence of their module categories and, consequently, an equivalence of corresponding derived categories. It is presented as a novel logarithmic level-rank duality and remains open.

Sources & referencesView supporting material

Primary source

Thomas Creutzig, Tudor Dimofte, Niklas Garner and Nathan Geer, “A QFT for non-semisimple TQFT”, arXiv:2112.01559 (2021).

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